Implement a hook useMap(initialMap) that provides a reactive Map-like object with utility functions.

The hook should:

• Accept an optional initial object to populate the map.
• Provide methods to get, set, delete, has, clear keys.
• Provide a method values() or entries() to get all current entries.
• Updates to the map should be reflected immediately when accessed through these methods.

Example

const map = useMap({ a: 1, b: 2 });
map.set("c", 3);
map.get("a"); // 1
map.delete("b");
map.has("b"); // false