Add hierarchical meta-orchestrator agents for campaign and workflow management

- Add Campaign Manager meta-orchestrator for strategic campaign coordination
- Add Workflow Health Manager for monitoring all workflow health
- Add Agent Performance Analyzer for evaluating agent quality and effectiveness
- Add comprehensive documentation for hierarchical agent system

Co-authored-by: mnkiefer <8320933+mnkiefer@users.noreply.github.com>

Author: Copilot