Add @bacons/mdx library (#2342)

* Add @bacons/mdx library

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* correct link to the package

* add example app link

* fix lint

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: Bartosz Kaszubowski <gosimek@gmail.com>

Author: 3 people

react-native-libraries.json

@@ -20302,5 +20302,15 @@
     "githubUrl": "https://github.com/jpancotti/expo-hardware-buttons",
     "ios": true,
     "newArchitecture": true
+  },
+  {
+    "githubUrl": "https://github.com/EvanBacon/expo-mdx/tree/main/packages/mdx",
+    "npmPkg": "@bacons/mdx",
+    "examples": ["https://github.com/EvanBacon/expo-mdx/tree/main/apps/demo"],
+    "ios": true,
+    "android": true,
+    "web": true,
+    "expoGo": true,
+    "newArchitecture": true
   }
 ]