remove Stubable and more metamodel simplifications

[akphi]

Summary

• Remove Stubable/createStub/isStub
• Move findPropertyMapping() out of InstanceSetImplementation
• Minor cleanups and rename helper files to align with DSLs
• Add some docs for milestoning, including getMilestoneTemporalStereotype()
• Remove getEmbeddedSetImplmentations() from InstanceSetImplementation
• IMPORTANT Rename fullPath to path in Package. Where this change really makes a difference is for the root package: previously, path was the name of the root package element, from now on, path will be empty string, this makes the handling of root package when constructing element path more consistent
• IMPORTANT Move logic out of metamodels, such as Class.getProperty(), Database.getSchema(), etc. and expose them as helper methods.

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: 735414a

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

This PR includes changesets to release 31 packages

Name	Type
@finos/legend-extension-dsl-diagram	Patch
@finos/legend-extension-external-store-service	Patch
@finos/legend-extension-mapping-generation	Patch
@finos/legend-graph	Major
@finos/legend-query	Patch
@finos/legend-studio	Patch
@finos/legend-studio-extension-query-builder	Patch
@finos/eslint-plugin-legend-studio	Minor
@finos/legend-dev-utils	Patch
@finos/legend-extension-dsl-text	Patch
@finos/legend-shared	Patch
@finos/legend-extension-dsl-data-space	Patch
@finos/legend-graph-extension-collection	Patch
@finos/legend-studio-app	Patch
@finos/legend-application	Patch
@finos/legend-extension-dsl-persistence	Patch
@finos/legend-extension-external-format-json-schema	Patch
@finos/legend-extension-external-language-morphir	Patch
@finos/legend-manual-tests	Patch
@finos/legend-taxonomy	Patch
@finos/legend-query-app	Patch
@finos/legend-studio-extension-management-toolkit	Patch
@finos/legend-art	Patch
@finos/legend-model-storage	Patch
@finos/legend-query-deployment	Patch
@finos/legend-server-depot	Patch
@finos/legend-server-sdlc	Patch
@finos/legend-studio-deployment	Patch
@finos/legend-taxonomy-app	Patch
@finos/legend-taxonomy-deployment	Patch
@finos/legend-tracer-extension-zipkin	Patch

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[codecov]

Codecov Report

Merging #1159 (735414a) into master (1e2026e) will increase coverage by 0.11%.
The diff coverage is 56.18%.

@@            Coverage Diff             @@
##           master    #1159      +/-   ##
==========================================
+ Coverage   42.78%   42.89%   +0.11%     
==========================================
  Files        1132     1136       +4     
  Lines       50037    49891     -146     
  Branches    11441    11430      -11     
==========================================
- Hits        21407    21401       -6     
+ Misses      28559    28418     -141     
- Partials       71       72       +1     

Impacted Files	Coverage Δ
packages/eslint-plugin/src/configs/recommended.js	0.00% <ø> (ø)
.../ESService_RootServiceInstanceSetImplementation.ts	100.00% <ø> (+55.55%)	⬆️
...eration/src/components/MappingGenerationEditor.tsx	11.42% <0.00%> (-0.11%)	⬇️
...ckages/legend-graph/src/graph/DependencyManager.ts	36.97% <ø> (ø)
packages/legend-graph/src/graph/PureGraphPlugin.ts	100.00% <ø> (ø)
...graph/src/graphManager/AbstractPureGraphManager.ts	100.00% <ø> (ø)
...d-graph/src/graphManager/PureGraphManagerPlugin.ts	100.00% <ø> (ø)
...nager/action/changeDetection/CoreObserverHelper.ts	52.38% <ø> (ø)
...ction/changeDetection/DSLMapping_ObserverHelper.ts	17.41% <0.00%> (ø)
...ger/action/changeDetection/DomainObserverHelper.ts	23.83% <ø> (ø)
... and 172 more