feat(image): change extractColors to extractRGBAs

[manudeli]

Summary

I changed extractColors to extractRGBAs

Checks

Please check the following:

• I have written documents and tests, if needed.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 0231b22

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[codecov]

Codecov Report

Merging #42 (0231b22) into feat/color-extractor (d29136d) will decrease coverage by 0.90%.
The diff coverage is 90.90%.

Additional details and impacted files

@@                   Coverage Diff                    @@
##           feat/color-extractor      #42      +/-   ##
========================================================
- Coverage                 96.55%   95.65%   -0.90%     
========================================================
  Files                         4        4              
  Lines                        58       46      -12     
  Branches                      9        6       -3     
========================================================
- Hits                         56       44      -12     
  Misses                        2        2              

Components	Coverage Δ
@fepack/image	95.65% <90.90%> (-0.90%)	⬇️