yahorbarkouski/semantic-mail

AI Summary: Enhance the Semantic Mail CLI agent to support multiple Gmail accounts. This involves adding a `--account` command-line option to the `sync`, `search`, and `ask` commands, allowing users to specify which account to operate on. The default behavior should remain unchanged, operating on all linked accounts if no account is specified. This requires modifications to the authentication and data management components to handle multiple account credentials and data storage.