docs: FAQ entry for 'Does Superset have an API?'

[mistercrunch]

No description provided.

[request-info]

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[dpgaspar]

Looks good, just a comment

[codecov-commenter]

Codecov Report

Merging #10071 into master will decrease coverage by 0.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #10071      +/-   ##
==========================================
- Coverage   70.50%   70.37%   -0.13%     
==========================================
  Files         585      586       +1     
  Lines       31073    31119      +46     
  Branches     3185     3193       +8     
==========================================
- Hits        21908    21900       -8     
- Misses       9056     9104      +48     
- Partials      109      115       +6     

Flag	Coverage Δ
#cypress	53.13% <ø> (-0.79%)	⬇️
#javascript	59.71% <ø> (+0.21%)	⬆️
#python	70.07% <ø> (+<0.01%)	⬆️

Impacted Files	Coverage Δ
...et-frontend/src/SqlLab/reducers/getInitialState.js	33.33% <0.00%> (-16.67%)	⬇️
superset-frontend/src/reduxUtils.ts	70.88% <0.00%> (-8.87%)	⬇️
...rontend/src/SqlLab/components/TabbedSqlEditors.jsx	75.52% <0.00%> (-6.30%)	⬇️
superset-frontend/src/SqlLab/actions/sqlLab.js	61.13% <0.00%> (-5.68%)	⬇️
...rontend/src/SqlLab/components/SqlEditorLeftBar.jsx	44.00% <0.00%> (-4.00%)	⬇️
superset-frontend/src/SqlLab/reducers/sqlLab.js	37.44% <0.00%> (-3.30%)	⬇️
...end/src/SqlLab/components/TemplateParamsEditor.jsx	88.57% <0.00%> (-2.86%)	⬇️
...erset-frontend/src/SqlLab/components/SqlEditor.jsx	53.84% <0.00%> (-1.29%)	⬇️
.../src/dashboard/components/gridComponents/Chart.jsx	88.76% <0.00%> (-1.13%)	⬇️
...rontend/src/SqlLab/components/AceEditorWrapper.tsx	55.91% <0.00%> (-1.08%)	⬇️
... and 8 more

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