feat: add i18n support documentation and language import examples

- Created a new documentation file for language settings in i18n.
- Added examples for setting default languages and importing additional languages.
- Included instructions for adding and modifying languages in the ArtPlayer plugin.
- Introduced a new plugin: artplayer-plugin-liquid-glass with various build formats (legacy, mjs, etc.).

docs/document/assets/index.md.u8oxcBYH.lean.js

@@ -0,0 +1 @@
+import{_ as i,c as a,o as n,ak as l}from"./chunks/framework.xxfEszSJ.js";const g=JSON.parse('{"title":"安装使用","description":"","frontmatter":{},"headers":[],"relativePath":"index.md","filePath":"index.md","lastUpdated":1757137705000}'),p={name:"index.md"};function t(e,s,h,k,r,E){return n(),a("div",null,s[0]||(s[0]=[l("",50)]))}const c=i(p,[["render",t]]);export{g as __pageData,c as default};