Creates a new Lfx/ folder in the docs with three pages covering
the LFX executor from a user perspective:
- lfx-overview.mdx: what LFX is, when to use it, and a full command
reference table linking to the DevOps SDK docs
- lfx-install.mdx: install from PyPI, with bundles, from source, or via
uvx — plus bundle install guidance for standalone lfx users
- lfx-run.mdx: lfx serve and lfx run with full option tables,
stdin/inline JSON, Python script usage, and component category
allowlist/blocklist controls
Also adds an LFX sidebar category in the "Develop & Deploy" section
and a tip in flow-devops-sdk.mdx noting that standalone lfx installs
do not include bundle package components.
Co-authored-by: Cursor <cursoragent@cursor.com>
