feat: implement ECharts pie chart

[villebro]

🏆 Enhancements
Implement ECharts Pie Chart with same controls as legacy Pie Chart.

Needs to be rebased once superset-ui/core@0.15.0 lands in superset-frontend.

AFTER

BEFORE

CHART OPTIONS

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🔍 Inspect: https://vercel.com/superset/superset-ui/74wiaqxl7
✅ Preview: https://superset-ui-git-fork-preset-io-villebro-echarts-pie.superset.vercel.app

[ktmud]

Wow, looks so much nicer!

[villebro]

@ktmud @rusackas this now works with 0.15 and is ready for re-review

[ktmud]

LGTM with some nits

[codecov]

Codecov Report

Merging #772 into master will increase coverage by 0.27%.
The diff coverage is 73.52%.

@@            Coverage Diff             @@
##           master     #772      +/-   ##
==========================================
+ Coverage   24.89%   25.17%   +0.27%     
==========================================
  Files         353      353              
  Lines        7837     7866      +29     
  Branches     1009     1026      +17     
==========================================
+ Hits         1951     1980      +29     
+ Misses       5783     5777       -6     
- Partials      103      109       +6     

Impacted Files	Coverage Δ
...lugins/plugin-chart-echarts/src/Pie/EchartsPie.tsx	0.00% <ø> (ø)
...ugins/plugin-chart-echarts/src/Pie/controlPanel.ts	100.00% <ø> (ø)
plugins/plugin-chart-echarts/src/Pie/index.ts	0.00% <ø> (-33.34%)	⬇️
.../plugin-chart-echarts/src/Timeseries/buildQuery.ts	50.00% <ø> (+16.66%)	⬆️
...ugins/plugin-chart-echarts/src/Timeseries/index.ts	0.00% <ø> (-33.34%)	⬇️
...gin-chart-echarts/src/Timeseries/transformProps.ts	25.53% <ø> (ø)
...ins/plugin-chart-echarts/src/Pie/transformProps.ts	73.68% <72.72%> (+73.68%)	⬆️
plugins/plugin-chart-echarts/src/utils/series.ts	75.00% <100.00%> (+3.57%)	⬆️
plugins/plugin-chart-echarts/src/Pie/buildQuery.ts	100.00% <0.00%> (+100.00%)	⬆️

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[villebro]

@ktmud @rusackas ready for round 2.

[rusackas]

Thanks for all the follow through on this @villebro and @ktmud. Looking good!