Added vitepress for documentation. (#6270)

doc/.vitepress/config.mts

@@ -0,0 +1,74 @@
+import { defineConfig } from 'vitepress'
+import {version} from '../../package.json'
+// https://vitepress.dev/reference/site-config
+const commitRef = process.env.COMMIT_REF?.slice(0, 8) || 'dev'
+
+
+export default defineConfig({
+  title: "Etherpad Documentation",
+  description: "Next Generation Collaborative Document Editing",
+  themeConfig: {
+    // https://vitepress.dev/reference/default-theme-config
+    nav: [
+      { text: 'Home', link: '/' },
+      { text: 'Getting started', link: '/docker.md' }
+    ],
+    logo:'/favicon.ico',
+
+    sidebar: {
+        '/': [
+          {
+            link: '/',
+            text: 'About',
+            items: [
+                { text: 'Docker', link: '/docker.md' },
+                { text: 'Localization', link: '/localization.md' },
+                { text: 'Cookies', link: '/cookies.md' },
+                { text: 'Plugins', link: '/plugins.md' },
+                { text: 'Stats', link: '/stats.md' },
+                {text: 'Skins', link: '/skins.md' },
+                {text: 'Demo', link: '/demo.md' },
+                ]
+          },
+          {
+            text: 'API',
+            link: '/api/',
+            items: [
+              { text: 'Changeset', link: '/api/changeset_library.md' },
+              {text: 'Editbar', link: '/api/editbar.md' },
+              {text: 'EditorInfo', link: '/api/editorInfo.md' },
+              {text: 'Embed Parameters', link: '/api/embed_parameters.md' },
+              {text: 'Hooks Client Side', link: '/api/hooks_client-side.md' },
+              {text: 'Hooks Server Side', link: '/api/hooks_server-side.md' },
+              {text: 'Plugins', link: '/api/pluginfw.md' },
+              {text: 'Toolbar', link: '/api/toolbar.md' },
+              {text: 'HTTP API', link: '/api/http_api.md' },
+            ]
+          },
+          {
+          text: 'Old Docs',
+            items: [
+                { text: 'Easysync description', link: '/easysync/easysync-full-description.pdf' },
+                { text: 'Easysync notes', link: '/easysync/easysync-notes.pdf' }
+            ]
+          }
+        ],
+      '/stats': [
+        {
+          text: 'Stats',
+          items:[
+            { text: 'Stats', link: '/stats/' }
+          ]
+        }
+      ]
+    },
+    footer: {
+      message: `Published under Apache License`,
+      copyright: `(${commitRef}) v${version} by Etherpad Foundation`
+    },
+
+    socialLinks: [
+      { icon: 'github', link: 'https://github.com/ether/etherpad-lite' }
+    ]
+  }
+})