Introduce a new flet-mcp Python package (pyproject, README, package code and data) providing an MCP server for LLM agents, including ApiStore and bundled icons/docs data. Integrate flet-mcp into the CLI by registering an optional "mcp" subcommand only when the package is installed and add an optional dependency entry in flet-cli's pyproject. Update GitHub Actions to build, package, and publish flet-mcp (new build_flet_mcp job and inclusion in the publish step). Also add .gitignore for generated MCP artifacts and include various minor Python package updates.

Introduce a new flet_mcp build subpackage and tooling to generate MCP data. Adds api.py (API reference builder using Griffe, injects icon enums and extracts CLI help), docs.py (mkdocs search_index -> SQLite FTS5 indexer), examples.py (pyproject.toml-based examples indexer), and indexer.py (orchestrator that runs examples/docs/API pipelines and writes mcp.db/api.json). Update .gitignore to un-ignore the build subpackage and tweak icons.yml comment/content.