Move integration tester to typespec core

.github/workflows/external-integration.yml

@@ -42,7 +42,7 @@ jobs:
           echo "Created tgz packages:"
           ls -la ./tgz-packages/
 
-          cd packages/integration-tester
+          cd core/packages/tsp-integration
           npm link
 
       - name: Checkout

packages/integration-tester/config/integration-test-config.yaml → .typespec-integration/config.yaml

@@ -5,13 +5,13 @@ suites:
     pattern: "specification/**/tspconfig.yaml"
     entrypoints:
       - name: "client.tsp"
-        options: ["--dry-run"]
+        options: ["--no-emit"]
       - name: "main.tsp"
   azure-specs-pr:
     repo: https://github.com/Azure/azure-rest-api-specs-pr
     branch: typespec-next
     pattern: "specification/**/tspconfig.yaml"
     entrypoints:
       - name: "client.tsp"
-        options: ["--dry-run"]
+        options: ["--no-emit"]
       - name: "main.tsp"