Makes the exception names of the argument parser consistent

[smehringer]

Resolves #481

I changed the names according to our resolution in the strategy meeting (card)
Additionally, the first commit get's rid of the internal exception in the function retrive_value. The success is indicated by a return value instead and the exception is thrown outside. This also made the exceptions std::type_conversion-error and std::overflow_errow obsolete which lowers the number of exceptions in general.

[codecov]

Codecov Report

Merging #1467 into master will increase coverage by 0.04%.
The diff coverage is 86.95%.

@@            Coverage Diff             @@
##           master    #1467      +/-   ##
==========================================
+ Coverage   97.58%   97.62%   +0.04%     
==========================================
  Files         235      235              
  Lines        8844     8855      +11     
==========================================
+ Hits         8630     8645      +15     
+ Misses        214      210       -4

Impacted Files	Coverage Δ
include/seqan3/argument_parser/exceptions.hpp	100% <100%> (ø)	⬆️
include/seqan3/argument_parser/validators.hpp	88.69% <44.44%> (ø)	⬆️
include/seqan3/argument_parser/argument_parser.hpp	98.54% <93.75%> (ø)	⬆️
...ude/seqan3/argument_parser/detail/format_parse.hpp	96.58% <97.5%> (+2.31%)	⬆️

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[MitraDarja]

Just some typos. :)

[smehringer]

sorry I did not see that you approved already. You can or cannot check the differences and approve again. In general if you find typos, you can request changes as they are just as valid as code changing requests.

[smehringer]

Sorry, I had to rebase and add a different commit for the renaming in the documentation to keep the history clean. Doing that later would have been too compilcated.

[rrahn]

a few things left

[rrahn]

Have you verified the code coverage issue?

[smehringer]

It has nothing to do with me. I'll rebase to current master to see if this fixes it.

[smehringer]

@rrahn Code coverage only fails because of the filesystem errors that in the file validators were renamed but are not tested. So I think this can be merged.

[smehringer]

@rrahn I updated the Changelog entry to link this PR.
The code coverage fail is unrelated to this PR, since it records 4 misses that are due to the untested error handling of the input_directory_validators where I changed the exception names so I trigger the misses again. Fixes the code coverage should be part of another PR, I'll make a card.