create: support './' and abs for protofile path

[WineChord]

No description provided.

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (a5e4c51) 64.23214% compared to head (698704c) 64.40043%.

Additional details and impacted files

@@                 Coverage Diff                 @@
##                main         #19         +/-   ##
===================================================
+ Coverage   64.23214%   64.40043%   +0.16828%     
===================================================
  Files             61          61                 
  Lines           5600        5604          +4     
===================================================
+ Hits            3597        3609         +12     
+ Misses          1650        1642          -8     
  Partials         353         353                 

Flag	Coverage Δ
unittests	64.40043% <50.00000%> (+0.16828%)	⬆️

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Files	Coverage Δ
util/fs/file.go	73.13433% <100.00000%> (ø)
cmd/create/options.go	42.57703% <40.00000%> (+0.08411%)	⬆️

... and 2 files with indirect coverage changes

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