refactor(i18n): use JSON with flattened key and namespace (#30114)

Co-authored-by: yyh <yuanyouhuilyz@gmail.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

web/eslint-rules/index.js

@@ -0,0 +1,18 @@
+import noAsAnyInT from './rules/no-as-any-in-t.js'
+import noLegacyNamespacePrefix from './rules/no-legacy-namespace-prefix.js'
+import requireNsOption from './rules/require-ns-option.js'
+
+/** @type {import('eslint').ESLint.Plugin} */
+const plugin = {
+  meta: {
+    name: 'dify-i18n',
+    version: '1.0.0',
+  },
+  rules: {
+    'no-as-any-in-t': noAsAnyInT,
+    'no-legacy-namespace-prefix': noLegacyNamespacePrefix,
+    'require-ns-option': requireNsOption,
+  },
+}
+
+export default plugin