refactor(core): move mexp from plugins to core

[villebro]

🏠 Internal

Move math-expression-evaluator from plugins to superset-ui-core and add new functionality + tests to establish feature parity with relevant mathjs functionality.

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/superset/superset-ui/F88DKYqTfMUaXG3NryzGYxsqcaLK
✅ Preview: https://superset-ui-git-fork-preset-io-villebro-mexpr-util-superset.vercel.app

[codecov]

Codecov Report

Merging #1371 (5580f99) into master (4601f6e) will increase coverage by 0.13%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1371      +/-   ##
==========================================
+ Coverage   30.35%   30.49%   +0.13%     
==========================================
  Files         495      496       +1     
  Lines        9897     9914      +17     
  Branches     1666     1666              
==========================================
+ Hits         3004     3023      +19     
+ Misses       6649     6647       -2     
  Partials      244      244              

Impacted Files	Coverage Δ
plugins/legacy-preset-chart-nvd3/src/NVD3Vis.js	0.00% <ø> (ø)
...lugin-chart-echarts/src/Timeseries/transformers.ts	44.44% <ø> (ø)
...ugins/plugin-chart-echarts/src/utils/annotation.ts	82.50% <ø> (-1.23%)	⬇️
...ages/superset-ui-core/src/math-expression/index.ts	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4601f6e...5580f99. Read the comment docs.

[zhaoyongjie]

LGTM, except for jest style

[etr2460]

thanks for adding the new tests!

[ktmud]

really cool improvements!