feat(vue): enable no-unused-emit-declarations as error

Errors when emits are declared but never used. No autofix.

Author: kelsos

src/configs/vue.ts

@@ -84,6 +84,7 @@ export async function vue(
         allowBinding: false,
       },
     ],
+    'vue/no-unused-emit-declarations': 'error',
     'vue/prefer-define-options': 'error',
     'vue/prefer-import-from-vue': 'error',
     'vue/prefer-use-template-ref': 'warn',

test/__snapshots__/factory/full-on.snap.json

@@ -1504,6 +1504,7 @@
       "vue/no-template-shadow": "warn",
       "vue/no-textarea-mustache": "error",
       "vue/no-unused-components": "error",
+      "vue/no-unused-emit-declarations": "error",
       "vue/no-unused-refs": "error",
       "vue/no-unused-vars": "error",
       "vue/no-use-computed-property-like-method": "error",

test/__snapshots__/factory/javascript-vue.snap.json

@@ -1284,6 +1284,7 @@
       "vue/no-template-shadow": "warn",
       "vue/no-textarea-mustache": "error",
       "vue/no-unused-components": "error",
+      "vue/no-unused-emit-declarations": "error",
       "vue/no-unused-refs": "error",
       "vue/no-unused-vars": "error",
       "vue/no-use-computed-property-like-method": "error",