uv updates

[saxix]

This pull request introduces comprehensive user management capabilities to the Bitcaster SDK CLI and completes the migration of the project to uv for dependency management.

Key Changes:

• User Management Feature (feat(users)):

  • Introduced a new users command group in the CLI.
  • Added users list to display organization users.
  • Implemented users add for creating new users.
  • Implemented users update for modifying existing user details.
  • Extended bitcaster_sdk.client with add_user and update_user methods.
  • Added patch and put methods to the transport layer.
  • Introduced helpers.py for dictionary processing logic (merge, override, remove).
  • Defined common JSON types in types.pyi.
  • Included new unit tests for user management and dictionary processing.
  • Refactored CLI entry point from main.py to cli.py for better module organization.

• UV Migration & Dependency Updates:

  • Completed the migration of project dependency management to uv.
  • Updated uv.lock and pyproject.toml to reflect new dependency versions and Python support.
  • Ensured compatibility with Python 3.10 and newer.
  • General project updates and dependency bumps (reflected in "updats" and "updates" commits).

Motivation:
These changes enhance the SDK's functionality by providing direct CLI control over user accounts and modernize the project's dependency management system for improved reliability and performance.

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