fix(cli): correct bin path to match tsdown output (#1337)

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

Author: decepulis

packages/cli/package.json

@@ -9,7 +9,7 @@
     "url": "https://github.com/videojs/v10",
     "directory": "packages/cli"
   },
-  "bin": "./dist/index.js",
+  "bin": "./dist/index.mjs",
   "files": [
     "dist",
     "docs"