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/nanoid/index.js

@@ -0,0 +1,47 @@
+import { webcrypto as crypto } from 'node:crypto'
+import { urlAlphabet as scopedUrlAlphabet } from './url-alphabet/index.js'
+export { urlAlphabet } from './url-alphabet/index.js'
+const POOL_SIZE_MULTIPLIER = 128
+let pool, poolOffset
+function fillPool(bytes) {
+  if (!pool || pool.length < bytes) {
+    pool = Buffer.allocUnsafe(bytes * POOL_SIZE_MULTIPLIER)
+    crypto.getRandomValues(pool)
+    poolOffset = 0
+  } else if (poolOffset + bytes > pool.length) {
+    crypto.getRandomValues(pool)
+    poolOffset = 0
+  }
+  poolOffset += bytes
+}
+export function random(bytes) {
+  fillPool((bytes |= 0))
+  return pool.subarray(poolOffset - bytes, poolOffset)
+}
+export function customRandom(alphabet, defaultSize, getRandom) {
+  let mask = (2 << (31 - Math.clz32((alphabet.length - 1) | 1))) - 1
+  let step = Math.ceil((1.6 * mask * defaultSize) / alphabet.length)
+  return (size = defaultSize) => {
+    if (!size) return ''
+    let id = ''
+    while (true) {
+      let bytes = getRandom(step)
+      let i = step
+      while (i--) {
+        id += alphabet[bytes[i] & mask] || ''
+        if (id.length >= size) return id
+      }
+    }
+  }
+}
+export function customAlphabet(alphabet, size = 21) {
+  return customRandom(alphabet, size, random)
+}
+export function nanoid(size = 21) {
+  fillPool((size |= 0))
+  let id = ''
+  for (let i = poolOffset - size; i < poolOffset; i++) {
+    id += scopedUrlAlphabet[pool[i] & 63]
+  }
+  return id
+}