Fix 'npm: watch' problem matcher, run eslint in webpack

Closes #115

Signed-off-by: David Thompson <davthomp@redhat.com>

Author: datho7561

.vscode/tasks.json

@@ -7,7 +7,8 @@
       "type": "npm",
       "script": "watch",
       "problemMatcher": [
-        "$ts-webpack-watch"
+        "$ts-webpack-watch",
+        "$eslint-stylish"
       ],
       "isBackground": true,
       "presentation": {