Run setup script with ts-node

[zakpatterson]

Setup script compiles our runtime data schema definitions. This just moves it into a script folder and runs it as typescript code.

What kind of change does this PR introduce? (delete not applicable)

• Refactor
• Build-related changes

[codecov-commenter]

Codecov Report

Merging #659 (c323b29) into master (9bcefa2) will decrease coverage by 0.07%.
The diff coverage is 22.22%.

@@            Coverage Diff             @@
##           master     #659      +/-   ##
==========================================
- Coverage   64.20%   64.13%   -0.08%     
==========================================
  Files         108      112       +4     
  Lines        3716     3739      +23     
  Branches      573      578       +5     
==========================================
+ Hits         2386     2398      +12     
- Misses       1315     1326      +11     
  Partials       15       15              

Impacted Files	Coverage Δ
src/components/SaveToFile.tsx	0.00% <0.00%> (ø)
src/components/UserSettings.tsx	0.00% <0.00%> (ø)
src/redux/fs/Actions.ts	0.00% <0.00%> (ø)
src/redux/fs/Load.tsx	9.09% <9.09%> (ø)
src/redux/fs/index.ts	10.00% <10.00%> (ø)
src/redux/fs/FSReducer.ts	58.33% <58.33%> (ø)
src/redux/store.ts	69.23% <100.00%> (ø)
src/tests/common/Page.tsx	100.00% <100.00%> (ø)
src/irsForms/Schedule8812.ts	85.29% <0.00%> (-2.95%)	⬇️
src/irsForms/ScheduleEIC.ts	80.44% <0.00%> (+1.67%)	⬆️
... and 1 more

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[thegrims]

LGTM