w: implement --short option

[ant0nkress]

Description

We check for the parameter -s | --short. If it is set we exclude printing of login time, JCPU time and PCPU time.

Testing

Added a test to make sure only necessary values are printed.

[cakebaker]

Can you please run cargo fmt? And did you notice that the test fails?

[cakebaker]

@ant0nkress ping?

[codecov]

Codecov Report

Attention: Patch coverage is 65.38462% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 51.26%. Comparing base (9391cf1) to head (c898182).
Report is 46 commits behind head on main.

Files	Patch %	Lines
src/uu/w/src/w.rs	28.57%	4 Missing and 1 partial ⚠️
tests/by-util/test_w.rs	78.94%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            main      #61       +/-   ##
==========================================
+ Coverage   0.10%   51.26%   +51.15%     
==========================================
  Files         18       18               
  Lines       1841     2331      +490     
  Branches     239      340      +101     
==========================================
+ Hits           2     1195     +1193     
+ Misses      1839     1072      -767     
- Partials       0       64       +64     

Flag	Coverage Δ
macos_latest	50.63% <57.14%> (?)
ubuntu_latest	46.58% <65.38%> (?)
windows_latest	0.10% <0.00%> (-0.01%)	⬇️

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[cakebaker]

Thanks for your PR!