feat: add prettier for formatting html and json

package-lock.json

@@ -10,6 +10,7 @@
       "license": "ISC",
       "devDependencies": {
         "@tailwindcss/cli": "^4.1.17",
+        "prettier": "3.6.2",
         "tailwindcss": "^4.1.17"
       }
     },
@@ -1083,6 +1084,22 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
+    "node_modules/prettier": {
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.6.2.tgz",
+      "integrity": "sha512-I7AIg5boAr5R0FFtJ6rCfD+LFsWHp81dolrFD8S79U9tb8Az2nGrJncnMSnys+bpQJfRUzqs9hnA81OAA3hCuQ==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
     "node_modules/source-map-js": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",