#14249 docs(cli): add Belarusian quickstart guide

Fixes #14235

Summary

Adds sdks/python-cli/examples/quickstart.be.md, a complete Belarusian quickstart for omi-cli.

It covers:

• pipx and virtualenv installation;
• browser/API-key authentication and safe credential handling;
• memory, conversation (including transcript), action-item, and goal commands;
• JSON output and pagination;
• named profiles and configuration;
• the Omi Desktop local API;
• stable exit codes and retry/error behavior.

The command names, flags, defaults, and exit-code meanings are aligned with the current CLI source and omi_cli/errors.py. This is an isolated docs-only change; no index or source files are modified.

Verification

• python -m pytest -o addopts= -q — 434 passed, 2 skipped
• git diff HEAD~1..HEAD --check — clean