chore: update watch tasks (#741)

Signed-off-by: Yan Zhang <yanzh@microsoft.com>

.vscode/tasks.json

@@ -18,8 +18,8 @@
                 ],
                 "background": {
                     "activeOnStart": true,
-                    "beginsPattern": "Compilation \\w+ starting…",
-                    "endsPattern": "Compilation\\s+finished"
+                    "beginsPattern": "\\w+",
+                    "endsPattern": "webpack .* compiled"
                 }
             },
             "isBackground": true,

package.json

@@ -709,7 +709,7 @@
     "build-plugin": "node scripts/build-jdtls-ext.js",
     "compile": "tsc -p ./",
     "tslint": "tslint -t verbose --project tsconfig.json",
-    "watch": "webpack --mode development --watch --info-verbosity verbose",
+    "watch": "webpack --mode development --watch",
     "test": "npm run compile && node ./out/test/runTest.js",
     "webpack": "webpack --mode development"
   },