feat: Initial confluence-mcp server for realtime collaboration

Provides 8 MCP tools for Confluence Cloud:
- confluence_list_spaces, confluence_create_space
- confluence_search, confluence_get_page
- confluence_create_page, confluence_update_page
- confluence_get_comments, confluence_add_comment

Uses Confluence REST API v2 with basic auth.
Registered in Claude Code and mcp-proxy.

Refs: CF-935

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

node_modules/zod-to-json-schema/contributing.md

@@ -0,0 +1,9 @@
+# Contributing
+
+Hey, thanks for wanting to contribute.
+
+Before you open a PR, make sure to open an issue and discuss the problem you want to solve. I will not consider PRs without issues.
+
+I use [gitmoji](https://gitmoji.dev/) for my commit messages because I think it's fun. I encourage you to do the same, but won't enforce it.
+
+I check PRs and issues very rarely so please be patient.