Refactor repo legacy (#32404)

Only move code, no unnecessary logic change. (There are many problems in
old code, but changing them is not in this PR's scope)

Co-authored-by: Giteabot <teabot@gitea.io>

web_src/js/features/repo-new.ts

@@ -0,0 +1,14 @@
+import $ from 'jquery';
+
+export function initRepoNew() {
+  // Repo Creation
+  if ($('.repository.new.repo').length > 0) {
+    $('input[name="gitignores"], input[name="license"]').on('change', () => {
+      const gitignores = $('input[name="gitignores"]').val();
+      const license = $('input[name="license"]').val();
+      if (gitignores || license) {
+        document.querySelector('input[name="auto_init"]').checked = true;
+      }
+    });
+  }
+}