Profile avatar resize crop eklendi. Hatalar fixlendi.

client/src/stores/avatarStore.js

@@ -0,0 +1,7 @@
+import { writable } from "svelte/store";
+
+export const avatarUrlStore = writable(null);
+
+export function setAvatarUrl(url) {
+  avatarUrlStore.set(url || null);
+}