feat: add danmuku plugin documentation and i18n setup guide

- Created a new documentation file for the danmuku plugin with code examples.
- Added comprehensive language settings documentation, including default languages, importing languages, adding new languages, and modifying existing languages.
- Updated the i18n setup guide with code snippets for better clarity and usability.

packages/artplayer/package.json

@@ -1,6 +1,6 @@
 {
   "name": "artplayer",
-  "version": "5.3.0-beta.5",
+  "version": "5.3.0",
   "description": "ArtPlayer.js is a modern and full featured HTML5 video player",
   "author": "Harvey Zack <laozhaochaguan@gmail.com>",
   "license": "MIT",