feat(cli): generate Superset CLI docs

[sebastianliebscher]

SUMMARY

This PR introduces the CLI command update-cli-docs which generates a cli.mdx into docs.

• searches for all available CLI commands and sub-commands from Click
• gathers information like arguments and options as markdown content
• content will be html-sanitized and saved to the docs directory equivalent to the existing update-api-docs CLI function.

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Introduces new feature or API

[codecov]

Codecov Report

Merging #24213 (4bd5513) into master (f036adb) will increase coverage by 0.02%.
The diff coverage is 23.80%.

❗ Current head 4bd5513 differs from pull request most recent head 9c9a25e. Consider uploading reports for the commit 9c9a25e to get more accurate results

@@            Coverage Diff             @@
##           master   #24213      +/-   ##
==========================================
+ Coverage   68.24%   68.26%   +0.02%     
==========================================
  Files        1956     1957       +1     
  Lines       75589    75637      +48     
  Branches     8223     8224       +1     
==========================================
+ Hits        51582    51637      +55     
+ Misses      21899    21892       -7     
  Partials     2108     2108              

Flag	Coverage Δ
hive	53.30% <6.38%> (-0.07%)	⬇️
mysql	78.82% <6.38%> (?)
postgres	78.90% <6.38%> (-0.09%)	⬇️
presto	53.23% <6.38%> (-0.07%)	⬇️
python	82.72% <6.38%> (+<0.01%)	⬆️
sqlite	77.44% <6.38%> (?)
unit	53.35% <6.38%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...set-ui-core/src/ui-overrides/ExtensionsRegistry.ts	100.00% <ø> (ø)
...hart-echarts/src/BigNumber/BigNumberTotal/index.ts	66.66% <ø> (ø)
...arts/src/BigNumber/BigNumberWithTrendline/index.ts	66.66% <ø> (ø)
...t-frontend/plugins/plugin-chart-table/src/index.ts	66.66% <ø> (ø)
superset-frontend/src/SqlLab/actions/sqlLab.js	66.66% <ø> (+0.25%)	⬆️
...d/src/SqlLab/components/SqlEditorLeftBar/index.tsx	62.12% <ø> (+0.92%)	⬆️
superset-frontend/src/SqlLab/fixtures.ts	100.00% <ø> (ø)
...et-frontend/src/SqlLab/reducers/getInitialState.js	90.62% <ø> (ø)
superset-frontend/src/SqlLab/reducers/sqlLab.js	38.46% <ø> (+0.21%)	⬆️
superset-frontend/src/SqlLab/types.ts	57.14% <ø> (ø)
... and 9 more

... and 15 files with indirect coverage changes

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