feat: extend uplift tag with current flag for printing the current repository tag

[ga-paul-t]

closes #244

[codecov-commenter]

Codecov Report

Merging #250 (1d0deef) into main (b3b051b) will increase coverage by 0.14%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #250      +/-   ##
==========================================
+ Coverage   84.49%   84.64%   +0.14%     
==========================================
  Files          40       40              
  Lines        1877     1895      +18     
==========================================
+ Hits         1586     1604      +18     
  Misses        232      232              
  Partials       59       59              

Impacted Files	Coverage Δ
internal/context/context.go	100.00% <ø> (ø)
cmd/uplift/tag.go	83.54% <100.00%> (+1.85%)	⬆️
internal/task/gittag/gittag.go	89.58% <100.00%> (+2.74%)	⬆️

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