feat: Amber, Lime and Yellow palettes and swatches

[rafamizes]

Closes #49

[codecov]

Codecov Report

Merging #52 (41bed8d) into master (c06bd4d) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #52   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           41        53   +12     
  Lines          175       223   +48     
=========================================
+ Hits           175       223   +48     

Impacted Files	Coverage Δ
lib/src/material/amber/amber.dart	100.00% <100.00%> (ø)
lib/src/material/amber/amber_accent.dart	100.00% <100.00%> (ø)
lib/src/material/amber/amber_accents.dart	100.00% <100.00%> (ø)
lib/src/material/amber/ambers.dart	100.00% <100.00%> (ø)
lib/src/material/lime/lime.dart	100.00% <100.00%> (ø)
lib/src/material/lime/lime_accent.dart	100.00% <100.00%> (ø)
lib/src/material/lime/lime_accents.dart	100.00% <100.00%> (ø)
lib/src/material/lime/limes.dart	100.00% <100.00%> (ø)
lib/src/material/yellow/yellow.dart	100.00% <100.00%> (ø)
lib/src/material/yellow/yellow_accent.dart	100.00% <100.00%> (ø)
... and 14 more

---

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[rafamizes]

@rultor release, tag is 0.0.8

[rultor]

@rultor release, tag is 0.0.8

@rafamizes OK, I will release it now. Please check the progress here

[rultor]

@rultor release, tag is 0.0.8

@rafamizes Done! FYI, the full log is here (took me 2min)