Fix nmo-python PyPI publish failure by version bump and metadata completion

[Copilot]

Publish nmo-python to PyPI failed because PyPI rejected re-used artifact filenames for 0.10.2.dev0. In the same run, package metadata validation reported missing long description fields.

• Root-cause correction: publishable version increment

  • Bumped workspace/package version from 0.10.2-dev to 0.10.3-dev so generated wheel filenames are new and uploadable.
  • Updated lockfile entries accordingly to keep workspace versions aligned.

• Packaging metadata cleanup for PyPI validation

  • Added project description and readme metadata in nemo-python/pyproject.toml so published artifacts include a proper long description source.

[project]
name = "nemo-python"
description = "Python bindings for nemo, a fast in-memory rule engine"
readme = "README.md"
dynamic = ["version"]