Improve help facility: `razer-cli help TOPIC`.

[4kbyte]

There's razer-cli -man TOPIC but that's not immediately intuitive and gets lost easily in the parser-generated -h output.

To start, add an alias to have razer-cli -man TOPIC be the same as:

razer-cli help TOPIC

Also, there's need of systematic review of whether Python and OS packaging are picking up the package data declared in setup.py.

> razer-cli -man device
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.13/razer-cli", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/usr/lib/python3.13/site-packages/razer_cli/razer_cli/main.py", line 24, in main
    return util.print_manual(args.manual)
           ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/razer_cli/razer_cli/util.py", line 261, in print_manual
    ', '.join(sorted(os.listdir(d_path))))
                     ~~~~~~~~~~^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/usr/lib/python3.13/site-packages/razer_cli/razer_cli/man_pages'

That's from gentoo (w/emerge up to date), and I suspect others.

[4kbyte]

#96 adds the help alias. Outstanding:

Review whether OS packages are finding the package-data of setup.py installing the man pages.

[4kbyte]

@CjMullins87 The idea here is to install razer-cli on a few different operating systems. On the gentoo example in the description, I had installed this even though it was masked/keyword as testing/unstable. So razer-cli isn't going to be available as a package. But openrazer is, and razer-cli is just a single Python package.

Sketch, for a sample selection of OS (Ubuntu/Debian, Alpine, ...) that have openrazer packaged:

1. Install openrazer through the distro package.
2. Run python setup.py install on the razer-cli release.
3. Run razer-cli -man device and other help commands.

If it generally works, then great. But if we run into issues, I'd like to verify that we're not running into issues of setuptools itself being outdated as a packaging solution.