Bump case-app, add names limit to HelpFormat, move some name aliases, add test

[MaciejG604]

Fixes #1883
Related to alexarchambault/case-app#480

Some name aliases were moved to the top of the list of @Names so that they are displayed in the short help. In this way we get full option name displayed and possibly a single letter flag for it.

Rules for limiting name aliases are:
Using the namesLimit = Some(N) parameter in HelpFormat would pick N-1 first name aliases + the main name.
For example, for option:

    @ExtraName("fourOption")
    @ExtraName("f")
    @ExtraName("four")
    @ExtraName("fOpt")
    fourth: Int = 0

and namesLimit = Some(2) will result in --fourth, --four-option getting displayed
and for full help -f, --four, --f-opt, --fourth, --four-option