Add Documentation on Tool Usage with UV

[JennyPng]

• create documentation
  Add Documentation on UV and Tool Usage #42854

update existing documentation that mentions tox, once tox has been removed:

• CONTRIBUTING.md tox section
• https://github.com/Azure/azure-sdk-for-python/blob/main/doc/dev/static_type_checking.md#intro-to-typing-in-python ?
• update copilot-instructions