[request] add vue3 demo

[modos189]

Please add a demo with vue3.
In my project, I tried switching to CollectionView after #20 but encountered a problem where the panel incorrectly changes its position when swiping on MDSwitch.
I tried to reproduce this in a demo with vue2, but I couldn't add MDSwitch at all - the application crashes with an error.

logs

System.err: An uncaught Exception occurred on "main" thread.
System.err: Attempt to invoke interface method 'int java.lang.CharSequence.length()' on a null object reference
System.err:
System.err: StackTrace:
System.err: java.lang.NullPointerException: Attempt to invoke interface method 'int java.lang.CharSequence.length()' on a null object reference
System.err: at android.text.StaticLayout.(StaticLayout.java:538)
System.err: at androidx.appcompat.widget.SwitchCompat.makeLayout(SwitchCompat.java:993)
System.err: at androidx.appcompat.widget.SwitchCompat.onMeasure(SwitchCompat.java:914)
System.err: at android.view.View.measure(View.java:27557)
System.err: at org.nativescript.widgets.CommonLayoutParams.measureChild(CommonLayoutParams.java:262)
System.err: at org.nativescript.widgets.MeasureHelper.measureChild(GridLayout.java:961)
System.err: at org.nativescript.widgets.MeasureHelper.measure(GridLayout.java:876)
System.err: at org.nativescript.widgets.GridLayout.onMeasure(GridLayout.java:351)
System.err: at android.view.View.measure(View.java:27557)
System.err: at org.nativescript.widgets.CommonLayoutParams.measureChild(CommonLayoutParams.java:262)
System.err: at org.nativescript.widgets.ContentLayout.onMeasure(ContentLayout.java:39)
System.err: at android.view.View.measure(View.java:27557)
System.err: at androidx.recyclerview.widget.GridLayoutManager.measureChildWithDecorationsAndMargin(GridLayoutManager.java:787)
System.err: at androidx.recyclerview.widget.GridLayoutManager.measureChild(GridLayoutManager.java:758)
System.err: at androidx.recyclerview.widget.GridLayoutManager.layoutChunk(GridLayoutManager.java:619)
System.err: at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1622)
System.err: at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:687)
System.err: at androidx.recyclerview.widget.GridLayoutManager.onLayoutChildren(GridLayoutManager.java:182)
System.err: at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4604)
System.err: at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:4307)
System.err: at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4873)
System.err: at com.nativescript.collectionview.RecyclerView.onLayout(RecyclerView.java:66)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at org.nativescript.widgets.CommonLayoutParams.layoutChild(CommonLayoutParams.java:222)
System.err: at org.nativescript.widgets.GridLayout.onLayout(GridLayout.java:425)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at org.nativescript.widgets.CommonLayoutParams.layoutChild(CommonLayoutParams.java:222)
System.err: at org.nativescript.widgets.AbsoluteLayout.onLayout(AbsoluteLayout.java:83)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at org.nativescript.widgets.CommonLayoutParams.layoutChild(CommonLayoutParams.java:222)
System.err: at org.nativescript.widgets.GridLayout.onLayout(GridLayout.java:425)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at org.nativescript.widgets.CommonLayoutParams.layoutChild(CommonLayoutParams.java:222)
System.err: at org.nativescript.widgets.ContentLayout.onLayout(ContentLayout.java:80)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
System.err: at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1891)
System.err: at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1729)
System.err: at android.widget.LinearLayout.onLayout(LinearLayout.java:1638)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
System.err: at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1891)
System.err: at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1729)
System.err: at android.widget.LinearLayout.onLayout(LinearLayout.java:1638)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
System.err: at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
System.err: at com.android.internal.policy.DecorView.onLayout(DecorView.java:868)
System.err: at android.view.View.layout(View.java:24791)
System.err: at android.view.ViewGroup.layout(ViewGroup.java:6555)
System.err: at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:4768)
System.err: at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:4013)
System.err: at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2765)
System.err: at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:10219)
System.err: at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1544)
System.err: at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1553)
System.err: at android.view.Choreographer.doCallbacks(Choreographer.java:1109)
System.err: at android.view.Choreographer.doFrame(Choreographer.java:994)
System.err: at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1527)
System.err: at android.os.Handler.handleCallback(Handler.java:958)
System.err: at android.os.Handler.dispatchMessage(Handler.java:99)
System.err: at android.os.Looper.loopOnce(Looper.java:257)
System.err: at android.os.Looper.loop(Looper.java:368)
System.err: at android.app.ActivityThread.main(ActivityThread.java:8839)
System.err: at java.lang.reflect.Method.invoke(Native Method)
System.err: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:572)
System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1049)

[farfromrefug]

@modos189 you are welcome to create a demo for vue 3. you can create a PR which adds the demo snippets. yoy just need to add the demo-vue3 submodules at root first

[farfromrefug]

@modos189 open issue describing thr issue with the switch. add a video so that i can understand better