Add overwritePolicy for Registry

[kristw]

💔 Breaking Changes

BREAKING CHANGE: Change Registry constructor API to take object instead of single string name.

This constructor has not been called anywhere in incubator-superset. It is only used in other packages in @superset-ui, which are also updated in this PR.

🏆 Enhancements

feat: Add overwritePolicy for Registry so developer can customize whether overwriting is ALLOW, WARN or PROHIBIT.

🏠 Internal

fix: Change variable name options to config for consistency.

[codecov]

Codecov Report

Merging #37 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #37   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          48     48           
  Lines         407    420   +13     
=====================================
+ Hits          407    420   +13

Impacted Files	Coverage Δ
...src/registries/ChartBuildQueryRegistrySingleton.js	100% <100%> (ø)	⬆️
.../src/registries/ChartComponentRegistrySingleton.js	100% <100%> (ø)	⬆️
...t/src/registries/ChartMetadataRegistrySingleton.js	100% <100%> (ø)	⬆️
packages/superset-ui-core/src/models/Registry.js	100% <100%> (ø)	⬆️
...registries/ChartTransformPropsRegistrySingleton.js	100% <100%> (ø)	⬆️
...erset-ui-core/src/models/RegistryWithDefaultKey.js	100% <100%> (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 cf4f821...decb9e8. Read the comment docs.

[williaster]

Nice add! 🤩