Feat: Refactor schema classes to subclass from _Resource

[SinaChavoshi]

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feat:Refactor schema classes to subclass from _Resource
This release feature changes the internal implementation of create method in Schema classes. The methods Artifact.create_from_base_artifact_schema and Execution.create_from_base_execution_schema that were previously used by Schema classes are removed and the schema_base classes are now directly inheriting from the corresponding Artifact and Execution class.
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feat:Refactor schema classes to subclass from _Resource
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Fixes #<issue_number_goes_here> 🦕

[jialuzh]

Thanks for the PR.

[dandhlee]

Approving for samples.