Remove konf.Logger in favor of slog

[ktong]

No description provided.

[codecov]

Codecov Report

Merging #48 (89f4d0d) into main (a25863b) will decrease coverage by 0.83%.
The diff coverage is 66.66%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #48      +/-   ##
==========================================
- Coverage   77.88%   77.06%   -0.83%     
==========================================
  Files          16       15       -1     
  Lines         615      593      -22     
==========================================
- Hits          479      457      -22     
  Misses        127      127              
  Partials        9        9              

Components	Coverage Δ
konf	92.28% <66.66%> (-0.39%)	⬇️
pflag	41.57% <ø> (ø)

Files	Coverage Δ
config.go	97.63% <100.00%> (ø)
global.go	100.00% <100.00%> (ø)
option.go	100.00% <ø> (ø)
provider/file/file.go	100.00% <100.00%> (ø)
provider/file/watch.go	54.38% <25.00%> (ø)