Implement CSRF protection

frontend/src/updater.ts

@@ -14,8 +14,10 @@ export interface DeckyUpdater {
 export async function callUpdaterMethod(methodName: string, args = {}) {
   const response = await fetch(`http://127.0.0.1:1337/updater/${methodName}`, {
     method: 'POST',
+    credentials: 'include',
     headers: {
       'Content-Type': 'application/json',
+      Authentication: window.deckyAuthToken,
     },
     body: JSON.stringify(args),
   });