feat(snippets/javascript): add file loader import snippet

Author: Doğa Gürdal

package.json

@@ -36,6 +36,10 @@
       {
         "language": "twig",
         "path": "./snippets/twig.json"
+      },
+      {
+        "language": "javascript",
+        "path": "./snippets/javascript.json"
       }
     ]
   },

snippets/javascript.json

@@ -0,0 +1,6 @@
+{
+  "File Loader Import": {
+    "prefix": "flyntFileLoaderImport",
+    "body": "import 'file-loader?name=vendor/${1:file.ext}!${2|uglify-loader,csso-loader|}!${3:package-path}'"
+  }
+}