Add implied getopt-style dashed aliases

[rwxrob]

People expect dashes these days (unfortunately). So to help alleviate
the adjustment it could help to automatically create hidden completion
aliases for every command and alias that also has one and two dashes in
front.

h|help -> -h --h --help -help

We'd keep the --h even though that would be very rare. As aliases
these will automatically be replaced when tab is touched providing
immediately feedback about what the correct command is.

When completion is not available, we can log the error as an unsupported
option, but give a really good hint about what the correct command is.

Nothing about the dashed support would even be documented because we
definitely do not want to encourage that, mostly because people will
expect that other behavior of getopt command lines, notably the ability
to change and use them in any order.