feat: update documentation source and add index.md

- Changed documentation source from 'documentation.md' to 'index.md' in content.config.ts.
- Added new index.md file containing comprehensive documentation for ArtMCP, including installation, tools, prompts, resources, MCP integration, and API endpoints.
- Updated GitHub repository configuration in nuxt.config.ts for consistency.
- Bumped dependencies in package.json to latest versions for improved functionality and security.

nuxt.config.ts

@@ -70,12 +70,11 @@ export default defineNuxtConfig({
 
   studio: {
     route: '/studio',
-    // Git repository configuration (owner and repo are required)
     repository: {
-      provider: 'github', // 'github' or 'gitlab'
-      owner: 'arthurdanjou', // your GitHub/GitLab username or organization
-      repo: 'artmcp', // your repository name
-      branch: 'master' // the branch to commit to (default: 'main')
+      provider: 'github',
+      owner: 'ArthurDanjou',
+      repo: 'artmcp',
+      branch: 'master'
     }
   }
 })