feat: initial Pezkuwi Apps rebrand from polkadot-apps

Rebranded terminology:
- Polkadot → Pezkuwi
- Kusama → Dicle
- Westend → Zagros
- Rococo → PezkuwiChain
- Substrate → Bizinikiwi
- parachain → teyrchain

Custom logos with Kurdistan brand colors (#e6007a → #86e62a):
- bizinikiwi-hexagon.svg
- sora-bizinikiwi.svg
- hezscanner.svg
- heztreasury.svg
- pezkuwiscan.svg
- pezkuwistats.svg
- pezkuwiassembly.svg
- pezkuwiholic.svg

packages/react-hooks/src/useTimer.ts

@@ -0,0 +1,37 @@
+// Copyright 2017-2025 @pezkuwi/react-hooks authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { useEffect, useRef, useState } from 'react';
+
+import { useIsMountedRef } from './useIsMountedRef.js';
+
+export function useTimer <T> (stateFn: (prev: T) => T, initial: T, interval: number): T {
+  const [state, setState] = useState(initial);
+  const timerId = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const mountedRef = useIsMountedRef();
+
+  useEffect((): () => void => {
+    function fire (): void {
+      timerId.current = null;
+
+      if (mountedRef.current) {
+        try {
+          setState(stateFn);
+        } catch (e) {
+          console.error(e);
+        }
+
+        timerId.current = setTimeout(fire, interval);
+      }
+    }
+
+    fire();
+
+    return (): void => {
+      timerId.current && clearTimeout(timerId.current);
+    };
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  return state;
+}