Merge Uniffi and Core together

[Synicix]

Out of interest of reducing the amount of searching for blocks of code that was split between Core and Uniffi, after much discussion we decided to merge them into 1 file to simplify the developing experience and code base.

• Combined Uniffi and Core together
• Convert a few function back to private since it didn't need to be expose
• Move some integration tests to unit tests
• Review all clippy exception and remove a few disable flags to enable better coding practices

fixes PLT-274

[codecov]

Codecov Report

❌ Patch coverage is 95.98420% with 61 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/model/pipeline.rs	97.16%	24 Missing ⚠️
src/error.rs	85.96%	16 Missing ⚠️
src/store/filestore.rs	95.32%	8 Missing ⚠️
src/orchestrator/docker.rs	90.66%	7 Missing ⚠️
src/orchestrator/agent.rs	96.59%	5 Missing ⚠️
src/model/mod.rs	66.66%	1 Missing ⚠️

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