feat: initialize markr nostr bookmark client

- Add project structure with TypeScript, React, and Vite
- Implement nostr authentication using browser extension (NIP-07)
- Add NIP-51 compliant bookmark fetching and display
- Create minimal UI with login and bookmark components
- Integrate applesauce-core and applesauce-react libraries
- Add responsive styling with dark/light mode support
- Include comprehensive README with setup instructions

This is a minimal MVP for a nostr bookmark client that allows users to
view their bookmarks according to NIP-51 specification.

node_modules/applesauce-react/dist/hooks/use-event-factory.js

@@ -0,0 +1,8 @@
+import { useContext } from "react";
+import { FactoryContext } from "../providers/factory-provider.js";
+export function useEventFactory(require = true) {
+    const factory = useContext(FactoryContext);
+    if (!require && !factory)
+        throw new Error("Missing EventFactoryProvider");
+    return factory;
+}