feat: exFAT support

chore: refactor file sysem check scripts
fix: fix some mode bits

Author: limetech

emhttp/languages/en_US/helptext.txt

@@ -316,10 +316,6 @@ Not much info is printed in the window, but you can verify the operation is runn
 increasing for the device on the Main page.
 :end
 
-:info_reiserfs_cancel_help:
-**Cancel** will cancel the Check operation in progress.
-:end
-
 :info_xfs_check_help:
 **Check** will run the *xfs_repair* program to check file system integrity on the device.
 
@@ -332,15 +328,11 @@ Not much info is printed in the window, but you can verify the operation is runn
 increasing for the device on the Main page.
 :end
 
-:info_xfs_cancel_help:
-**Cancel** will cancel the Check operation in progress.
-:end
-
 :info_ext_check_help:
 **Check** will run the *e2fsck* program to check file system integrity on the device. Despite its name, *e2fsck* is used
 to check the whole family of ext2/ext3/ext4 file systems.
 
-The *Options* field is initialized with *-p* option to automatically fix any file system problems that can be safely fixed
+For **Fix** the *Options* field is initialized with *-p* option to automatically fix any file system problems that can be safely fixed
 without intervention.  If a problem is discovered which may require additional corrective action, e2fsck will print a
 description of the problem and then exit.
 
@@ -360,8 +352,11 @@ Note: *ntfsfix* will immediately exit if a hibernation file is detected (to prev
 The *Options* field is initialized with *-d* to clear the volume dirty flag if the volume can be fixed and mounted.
 :end
 
-:info_ext_cancel_help:
-**Cancel** will cancel the Check operation in progress.
+:info_exfat_check_help:
+**Check** will run the *fsck.exfat* program to check file system integrity on the device.
+
+For **Fix** the *Options* field is initialized with *-p* to repair the filesystem without user interaction if it can
+be done safely.
 :end
 
 :info_smart_notifications_help: