Add a description of the parameters and values to the help

[kostevichae]

Currently, usbguard get-parameter or usbguard set-parameter outputs only

$ usbguard get-parameter
 Usage: usbguard get-parameter [OPTIONS] <name>

 Options:
  -h, --help     Show this help.

$ usbguard set-parameter
 Usage: usbguard set-parameter [OPTIONS] <name> <value>

 Options:
  -v, --verbose  Print the previous and new attribute value.
  -h, --help     Show this help.

If you add a description of the parameters and accepted values, it would be convenient for beginners. I know about the existence of man, but the description of the parameters will not require very much complexity and will simplify the use. Please consider this possibility.