Add extension mechanism for Testable

[gayathrir11]

Summary

• Add extension mechanism for Testable
• Modify code in dsl-persistence to make use of this extension mechanism

How did you test this change?

• Test(s) added
• Manual testing (please provide screenshots/recordings)
• No testing (please provide an explanation)

[changeset-bot]

🦋 Changeset detected

Latest commit: 0dbfb55

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 25 packages

Name	Type
@finos/legend-graph	Patch
@finos/legend-extension-dsl-persistence	Patch
@finos/legend-application-query-bootstrap	Patch
@finos/legend-application-query	Patch
@finos/legend-application-studio-bootstrap	Patch
@finos/legend-application-studio	Patch
@finos/legend-application-taxonomy-bootstrap	Patch
@finos/legend-application-taxonomy	Patch
@finos/legend-application	Patch
@finos/legend-extension-dsl-data-space	Patch
@finos/legend-extension-dsl-diagram	Patch
@finos/legend-extension-dsl-mastery	Patch
@finos/legend-extension-dsl-persistence-cloud	Patch
@finos/legend-extension-dsl-service	Patch
@finos/legend-extension-dsl-text	Patch
@finos/legend-extension-format-json-schema	Patch
@finos/legend-extension-format-morphir	Patch
@finos/legend-extension-store-flat-data	Patch
@finos/legend-extension-store-relational	Patch
@finos/legend-extension-store-service-store	Patch
@finos/legend-manual-tests	Patch
@finos/legend-query-builder	Patch
@finos/legend-application-query-deployment	Patch
@finos/legend-application-studio-deployment	Patch
@finos/legend-application-taxonomy-deployment	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[codecov]

Codecov Report

Merging #1547 (0dbfb55) into master (04e914b) will decrease coverage by 0.02%.
The diff coverage is 34.61%.

@@            Coverage Diff             @@
##           master    #1547      +/-   ##
==========================================
- Coverage   40.67%   40.65%   -0.03%     
==========================================
  Files        1268     1268              
  Lines       56397    56425      +28     
  Branches    12734    12746      +12     
==========================================
  Hits        22941    22941              
- Misses      33373    33401      +28     
  Partials       83       83              

Impacted Files	Coverage Δ
...hManager/DSL_Persistence_PureGraphManagerPlugin.ts	32.25% <0.00%> (ø)
...d-graph/src/graphManager/PureGraphManagerPlugin.ts	0.00% <ø> (ø)
.../action/changeDetection/Testable_ObserverHelper.ts	16.66% <0.00%> (-3.34%)	⬇️
...raphManager/helpers/DSL_Data_GraphManagerHelper.ts	38.88% <0.00%> (-17.37%)	⬇️
...nager/protocol/pure/PureProtocolProcessorPlugin.ts	0.00% <ø> (ø)
...ransformation/pureGraph/from/V1_TestTransformer.ts	53.65% <0.00%> (-3.85%)	⬇️
...ation/pureGraph/to/helpers/V1_TestBuilderHelper.ts	50.00% <0.00%> (-3.20%)	⬇️
...pureGraph/to/helpers/V1_TestResultBuilderHelper.ts	22.77% <0.00%> (-3.76%)	⬇️
...serializationHelpers/V1_TestSerializationHelper.ts	44.33% <13.33%> (-4.05%)	⬇️
...ure/DSL_Persistence_PureProtocolProcessorPlugin.ts	77.08% <80.00%> (+0.56%)	⬆️
... and 2 more