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/eslint/lib/shared/ajv.js

@@ -0,0 +1,34 @@
+/**
+ * @fileoverview The instance of Ajv validator.
+ * @author Evgeny Poberezkin
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Ajv = require("ajv"),
+    metaSchema = require("ajv/lib/refs/json-schema-draft-04.json");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = (additionalOptions = {}) => {
+    const ajv = new Ajv({
+        meta: false,
+        useDefaults: true,
+        validateSchema: false,
+        missingRefs: "ignore",
+        verbose: true,
+        schemaId: "auto",
+        ...additionalOptions
+    });
+
+    ajv.addMetaSchema(metaSchema);
+    // eslint-disable-next-line no-underscore-dangle -- Ajv's API
+    ajv._opts.defaultMeta = metaSchema.id;
+
+    return ajv;
+};