Add clean task

Author: Tony Spataro

package.json

@@ -77,6 +77,7 @@
 		"colors": []
 	},
 	"scripts": {
+		"clean": "rm -Rf out",
 		"compile": "tsc -p ./",
 		"package": "vsce package --yarn --githubBranch main",
 		"publish": "vsce publish --yarn --githubBranch main",