api: deprecate StandardRequestHandler.add_standard_request_handlers() 'blacklist' argument in favor of 'skiplist'

[antoinevg]

This PR adds a deprecation warning and support for using skiplist instead of blacklist when adding standard request handlers.

Example:

ep_control.add_standard_request_handlers(descriptors, blacklist=[
    # We have multiple interfaces so we will need to handle
    # SET_INTERFACE ourselves.
    lambda setup: (setup.type == USBRequestType.STANDARD) &
                  (setup.request == USBStandardRequests.SET_INTERFACE)
])

Becomes:

ep_control.add_standard_request_handlers(descriptors, skiplist=[
    # We have multiple interfaces so we will need to handle
    # SET_INTERFACE ourselves.
    lambda setup: (setup.type == USBRequestType.STANDARD) &
                  (setup.request == USBStandardRequests.SET_INTERFACE)
])

Also considered was ignorelist and ignore but I chose in favor of skiplist as it expresses both the intent and the type of the argument, as well as being shorter.