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/helpers/nast.d.ts

@@ -0,0 +1,12 @@
+import React from "react";
+import { Content, ContentMap, Root } from "applesauce-content/nast";
+type Component<ComponentProps> = React.FunctionComponent<ComponentProps> | React.ComponentClass;
+export type ExtraProps<T extends Content> = {
+    node: T;
+};
+export type ComponentMap = Partial<{
+    [k in keyof ContentMap]: Component<ExtraProps<ContentMap[k]>>;
+}>;
+/** Render a nostr syntax tree to JSX components */
+export declare function renderNast(root: Root, components: ComponentMap): import("react/jsx-runtime").JSX.Element;
+export {};