feat: API for asset sync

[betodealmeida]

SUMMARY

This PR exposes ExportAssetsCommand and ImportAssetsCommand via an API, allowing users to synchronize their Superset models to and from source control.

This depends on #19217.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N/A

TESTING INSTRUCTIONS

I added unit tests for both API endpoints.

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #19220 (8a61210) into master (51061f0) will decrease coverage by 0.27%.
The diff coverage is 76.92%.

❗ Current head 8a61210 differs from pull request most recent head 73e0e57. Consider uploading reports for the commit 73e0e57 to get more accurate results

@@            Coverage Diff             @@
##           master   #19220      +/-   ##
==========================================
- Coverage   66.76%   66.49%   -0.28%     
==========================================
  Files        1670     1671       +1     
  Lines       64392    64618     +226     
  Branches     6499     6504       +5     
==========================================
- Hits        42991    42967      -24     
- Misses      19718    19967     +249     
- Partials     1683     1684       +1     

Flag	Coverage Δ
hive	?
mysql	81.64% <88.68%> (-0.33%)	⬇️
postgres	81.69% <88.68%> (-0.33%)	⬇️
presto	?
python	81.77% <88.68%> (-0.67%)	⬇️
sqlite	81.46% <88.68%> (-0.32%)	⬇️

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

Impacted Files	Coverage Δ
...ntend/packages/superset-ui-core/src/color/index.ts	100.00% <ø> (ø)
.../src/time-format/TimeFormatterRegistrySingleton.ts	100.00% <ø> (ø)
...ackages/superset-ui-core/src/utils/featureFlags.ts	100.00% <ø> (ø)
...end/plugins/legacy-plugin-chart-chord/src/Chord.js	0.00% <0.00%> (ø)
...ns/legacy-plugin-chart-chord/src/transformProps.js	0.00% <0.00%> (ø)
.../legacy-plugin-chart-country-map/src/CountryMap.js	0.00% <0.00%> (ø)
...acy-plugin-chart-country-map/src/transformProps.js	0.00% <0.00%> (ø)
...ns/legacy-plugin-chart-histogram/src/Histogram.jsx	0.00% <0.00%> (ø)
...egacy-plugin-chart-histogram/src/transformProps.js	0.00% <ø> (ø)
...ns/legacy-plugin-chart-horizon/src/controlPanel.ts	100.00% <ø> (+50.00%)	⬆️
... and 147 more

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[michael-s-molina]

LGTM. Thank you for the new API!