Add "Include" to extension TSConfig Files (#25860)

**Bug**
Most VSCode extensions currently specify `"exclude"` in their `tsconfig.json` but not `"include"`. This may result in extra files being included in each project

**Fix**
Add  `"include": ["src/**/*"]` to all extension tsconfig files

extensions/python/tsconfig.json

@@ -7,7 +7,7 @@
 		"module": "commonjs",
 		"outDir": "./out"
 	},
-	"exclude": [
-		"node_modules"
+	"include": [
+		"src/**/*"
 	]
 }