webpack: remove jquery-mask-plugin and enable alpine and alpine-mask

frontend/package.json

@@ -22,6 +22,7 @@
     "url": "https://github.com/AccordBox/python-webpack-boilerplate/issues"
   },
   "dependencies": {
+    "@alpinejs/mask": "^3.14.1",
     "@babel/core": "^7.16.7",
     "@babel/eslint-parser": "^7.16.5",
     "@babel/plugin-proposal-class-properties": "^7.16.7",
@@ -44,7 +45,6 @@
     "htmx.org": "^2.0.1",
     "hyperscript.org": "^0.9.12",
     "jquery": "^3.7.1",
-    "jquery-mask-plugin": "^1.14.16",
     "mini-css-extract-plugin": "^2.5.1",
     "postcss-loader": "^6.2.1",
     "postcss-preset-env": "^7.2.3",