feat: add calendar package and storybook

[kristw]

🏆 Enhancements

Migrate legacy-plugin-chart-calendar from @superset-ui-plugins

[vercel]

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[codecov]

Codecov Report

Merging #356 into master will decrease coverage by 39.88%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           master     #356       +/-   ##
===========================================
- Coverage   91.67%   51.78%   -39.89%     
===========================================
  Files         118      122        +4     
  Lines        1489     2636     +1147     
  Branches      388      388               
===========================================
  Hits         1365     1365               
- Misses         95     1242     +1147     
  Partials       29       29               

Impacted Files	Coverage Δ
...ugins/legacy-plugin-chart-calendar/src/Calendar.js	0.00% <0.00%> (ø)
plugins/legacy-plugin-chart-calendar/src/index.js	0.00% <0.00%> (ø)
...legacy-plugin-chart-calendar/src/transformProps.js	0.00% <0.00%> (ø)
...cy-plugin-chart-calendar/src/vendor/cal-heatmap.js	0.00% <ø> (ø)

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[ktmud]

Lgtm. Might have to adjust codecov targets later. Probably have a separate target for core packages and ignore project level and plugin level coverages.