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/micromark/dev/lib/postprocess.js

@@ -0,0 +1,19 @@
+/**
+ * @import {Event} from 'micromark-util-types'
+ */
+
+import {subtokenize} from 'micromark-util-subtokenize'
+
+/**
+ * @param {Array<Event>} events
+ *   Events.
+ * @returns {Array<Event>}
+ *   Events.
+ */
+export function postprocess(events) {
+  while (!subtokenize(events)) {
+    // Empty
+  }
+
+  return events
+}