feat: add DevOps AI client bootstrap

[DevOpsAIguru123]

Summary

• Add a one-command bootstrap utility for Claude Code, Codex, Cursor, Antigravity, and VS Code
• Generate project-local MCP configs plus shared DevOps operating skill files
• Add a lightweight stdio MCP catalog server exposing official DevOps/SRE/Cloud MCP entries for search
• Generate a portable official DevOps MCP catalog JSON from data/repos.yaml
• Document the setup in README and add test coverage

Safety

• Does not install third-party MCP servers
• Does not mutate global settings
• Does not store secrets
• Registers only a local catalog-search MCP server so users can review action level, approval gates, evidence, maturity, and risk notes before connecting real vendor MCP servers

Validation

• python3 scripts/validate_repos_yaml.py
• /Users/tuximac/projects/awesome-agentic-devops/.venv/bin/python -m pytest -q
• python3 scripts/run_mock_eval_scenarios.py
• Local MCP smoke test: search_devops_mcp_catalog(terraform) returns HashiCorp Terraform/Vault entries