Fix venv-based Python module packaging: include meta.json in archive

[jeremyrose-viam]

Summary

• DOCS-4924: the documented build.sh example for venv/PyInstaller-packaged Python modules produces a tarball missing meta.json. This breaks viam module reload/reload-local (hot-reload), which requires meta.json embedded in local tarballs — confirmed live: local tarballs must contain a meta.json with the 'entrypoint' field.
• The registry-install path (cloud build → viam module upload) works fine either way, since metadata comes from the registry entry. The current viam module generate CLI template already produces the correct tar command; these doc examples just predate that fix.
• Updated the build.sh example in build-modules/manage-modules.md to match the generator's actual command (meta.json + entrypoint + optional first_run file).
• Applied the same one-line fix to 4 duplicate copies of the same example in cli/reference.md (2 live, 2 in a commented-out block).

Test plan

• Reproduced the failure live: built the documented build.sh unmodified, deployed via reload-local to a real viam-server instance — failed with the meta.json error.
• Confirmed the fix resolves it: same tarball + meta.json deployed successfully, sensor component constructed and responded correctly (tested against a live webcam reading — brightness dropped from ~212 to ~1 when the camera was covered).
• Confirmed the registry path was never broken (control test): same meta.json-less tarball installed via the registry worked without issue.

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