cli: Update to clap 4

[felinira]

• Adds cli integration tests to spot any regressions in help as recommended in the clap migration guide
• Updates to clap 4
• Tweak the arguments to make the output look reasonable
• Remove deprecations

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 38.19%. Comparing base (9e53e6e) to head (0e21a04).

Files	Patch %	Lines
src/transfer/v2.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #218      +/-   ##
==========================================
+ Coverage   38.04%   38.19%   +0.15%     
==========================================
  Files          17       17              
  Lines        3144     3142       -2     
==========================================
+ Hits         1196     1200       +4     
+ Misses       1948     1942       -6     

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