Add P8-T2: Restructure DocC to Canonical Swift Package Format

[SoundBlaster]

Summary

New task to move DocC catalog from root-level mcpbridge-wrapper.docc/ to canonical SPM structure under Sources/XcodeMCPWrapper/Documentation.docc/

This follows Apple's standard Swift Package Manager documentation structure.

Task Details:

Field	Value
Task ID	P8-T2
Phase	Phase 8: Documentation Publishing
Priority	P2
Status	⏳ Pending
Dependencies	P8-T1 (completed)

Objective

Move DocC from mcpbridge-wrapper.docc/ to canonical SPM structure:

  Sources/
    XcodeMCPWrapper/
      Documentation.docc/
        XcodeMCPWrapper.md # Main landing page
        GettingStarted.md
        Installation.md
        Configuration.md
        CursorSetup.md
        ClaudeCodeSetup.md
        CodexCLISetup.md
        Troubleshooting.md
        Architecture.md
        EnvironmentVariables.md

Acceptance Criteria:

• DocC follows Apple's canonical SPM structure
• GitHub Actions workflow updated with new paths
• All content preserved
• GitHub Pages deployment works
• Old directory removed