feat: publish MotrixLab integration package with unified mxlab CLI

[wlgys8]

Summary

Refs #132. Based on main after prerequisite #133 merged.

• Add the motrixlab integration package with five exact same-version component dependencies and a thin lazy CLI.
• Provide a single framework executable: mxlab train, play, export-onnx, export-deploy, deploy. Remove old RL/deploy executable declarations and the intermediate export dispatcher; component Python/module APIs retain implementation ownership.
• Install motrixlab in the root development environment; include its dependency in Commitizen version updates.
• Publish six wheels in dependency order, with the aggregate last; migrate bilingual docs, package READMEs, scripts, Docker and tests.

Validation

• Targeted CLI/config/module/version tests: 35 passed. Unit contracts cover five routes, untouched downstream arguments, exit status, argument restoration, and lazy root help/version.
• Final wheels built; twine check passed. Installed on Python 3.10 and 3.11 outside checkout; all five command help paths, deploy inspect help, root help/version, and dependency checks passed.
• Confirmed only mxlab is exposed by the three updated distributions; root help imports no Torch/simulator/RL/deploy modules.
• Strict Sphinx Chinese/English builds and generated environment docs check passed using isolated documentation dependencies.
• prek run --all-files, new-file hooks, uv lock --check and git diff --check passed.
• Workspace Torch-dependent integration collection still fails on missing libcudnn.so.9; no GPU training/simulation or hardware execution claimed.

Release prerequisites

GitHub environments pypi-rl-builtin / pypi-env-motrixsim / pypi-motrixlab created. Maintainer still needs Pending/Trusted Publisher setup on PyPI and TestPyPI for new projects, final name registration confirmation, and actual workflow publication/index installation acceptance. No release/tag/upload executed; issue remains open.