svd2rust-regress usability woes

[therealprof]

The interface of svd2rust-regress is a bit iffy. On one hand internally every manufacturer and chip name is converted to a "nice" lower-case name with no special characters and this is used everywhere, also for the output of the --list option. On the other hand all options like --manufacturer and --chip expect to receive the unchanged original name.

Also wildcards are not supported which would be really nice to have.

Next problem is that bad tests are only listed or can be executed when the --bad-tests option is supplied however I'd expect to see bad tests in the listing as well (maybe with some additional marker) to know that they exists and also to execute them without having to explicitly specify that it's in the "bad tests" category when I specifically ask for a certain chip.

[burrbull]

related to #728