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/vfile/lib/minurl.shared.d.ts

@@ -0,0 +1,20 @@
+/**
+ * Checks if a value has the shape of a WHATWG URL object.
+ *
+ * Using a symbol or instanceof would not be able to recognize URL objects
+ * coming from other implementations (e.g. in Electron), so instead we are
+ * checking some well known properties for a lack of a better test.
+ *
+ * We use `href` and `protocol` as they are the only properties that are
+ * easy to retrieve and calculate due to the lazy nature of the getters.
+ *
+ * We check for auth attribute to distinguish legacy url instance with
+ * WHATWG URL instance.
+ *
+ * @param {unknown} fileUrlOrPath
+ *   File path or URL.
+ * @returns {fileUrlOrPath is URL}
+ *   Whether it’s a URL.
+ */
+export function isUrl(fileUrlOrPath: unknown): fileUrlOrPath is URL;
+//# sourceMappingURL=minurl.shared.d.ts.map