Ability to ignore ANN001 errors for specific argument names

[sumnerevans]

Description
Add a new option like allowed-unannotated-argument-names which is a comma separated list of argument names that are fine to not have annotated.

Rationale/Use Case
Examples: often I need to ingest variables in my functions that I never use (callbacks from another library for example). In these cases, I often will just use _ as my variable.

Here is an example of a GTK callback:

    def on_download_all_click(self, _: Any):
        CacheManager.batch_download_songs(
            self.get_artist_song_ids(),
            before_download=lambda: self.update_artist_view(
                self.artist_id,
                order_token=self.update_order_token,
            ),
            on_song_download_complete=lambda i: self.update_artist_view(
                self.artist_id,
                order_token=self.update_order_token,
            ),
        )

it would be nice if I could avoid having to have the Any annotation here.

[sco1]

While a generalized case is not something we’re interested in pursuing, as string parsing introduces its own set of complexity, there could be a case here for a special-case flag for suppressing colloquial “dummy” argument names.