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/fast-uri/.github/tests_checker.yml

@@ -0,0 +1,8 @@
+comment: |
+  Hello! Thank you for contributing!
+  It appears that you have changed the code, but the tests that verify your change are missing. Could you please add them?
+fileExtensions:
+  - '.ts'
+  - '.js'
+
+testDir: 'test'