Add .npmrc for bun usage and update dependencies

- Created a new .npmrc file to enforce bun usage.
- Bumped version numbers for multiple packages to 0.1.9 in bun.lock.
- Added react-sound-visualizer dependency to enhance audio visualization features.
- Introduced convert:assets script in package.json for asset optimization.
- Updated CONTRIBUTING.md with instructions for converting assets to web formats.
- Added documentation files for API endpoints and developer guidelines in the docs directory.

docs/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "voicebox-docs",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "mintlify dev",
+    "install:mintlify": "bun add -g mintlify"
+  },
+  "devDependencies": {
+    "mintlify": "latest"
+  },
+  "engines": {
+    "bun": ">=1.0.0"
+  }
+}