Enable pip and uv to install CLI tools alongside the library

[cyberkni]

Context

I really like using uv(and uvx) for accessing python tools without making a full installation. I noticed this repo contains a library and cli combined but the installation process for the CLI is a separate step after installing the library. This seemed a bit inconvenient since both pip and uv can install CLI tools.

Proposed change

Implement packaging for CLI tools by:

• Relocate CLI tools from cli/* to broadlink/cli* - this is required to put the CLI tools as a submodule within the broadlink package namespace as broadlink.cli
• Add broadlink/cli/init.py - needed for the directory to be a module
• Update existing cli/* scripts to just import the matching CLI module and run its main() - this provides backwards compatibility with the original install scheme
• Update setup.py to deploy CLI tools during install - this enables uv to do the right thing with tools in this library.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New device
• New product id (the device is already supported with a different id)
• New feature (which adds functionality to an existing device)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests
• Documentation

Additional information

I verified this changed by:
Starting with my workstation not having the library installed yet.
Then, I installed the package directly from my git repo using: uv tool install git+https://github.com/cyberrkni/python-broadlink/

Finally, I used the installed tools to ensure they worked. I used the learn function writing to a file for this.

Checklist

• The code change is tested and works locally.
• The code has been formatted using Black.
• The code follows the Zen of Python.
• I am creating the Pull Request against the correct branch.
• Documentation added/updated.