Add priority to protected branch (#32286)

## Solves

Currently for rules to re-order them you have to alter the creation
date. so you basicly have to delete and recreate them in the right
order. This is more than just inconvinient ...

## Solution

Add a new col for prioritization

## Demo WebUI Video

https://github.com/user-attachments/assets/92182a31-9705-4ac5-b6e3-9bb74108cbd1


---
*Sponsored by Kithara Software GmbH*

web_src/js/features/repo-settings-branches.ts

@@ -0,0 +1,32 @@
+import {createSortable} from '../modules/sortable.ts';
+import {POST} from '../modules/fetch.ts';
+import {showErrorToast} from '../modules/toast.ts';
+import {queryElemChildren} from '../utils/dom.ts';
+
+export function initRepoBranchesSettings() {
+  const protectedBranchesList = document.querySelector('#protected-branches-list');
+  if (!protectedBranchesList) return;
+
+  createSortable(protectedBranchesList, {
+    handle: '.drag-handle',
+    animation: 150,
+
+    onEnd: () => {
+      (async () => {
+        const itemElems = queryElemChildren(protectedBranchesList, '.item[data-id]');
+        const itemIds = Array.from(itemElems, (el) => parseInt(el.getAttribute('data-id')));
+
+        try {
+          await POST(protectedBranchesList.getAttribute('data-update-priority-url'), {
+            data: {
+              ids: itemIds,
+            },
+          });
+        } catch (err) {
+          const errorMessage = String(err);
+          showErrorToast(`Failed to update branch protection rule priority:, error: ${errorMessage}`);
+        }
+      })();
+    },
+  });
+}