docs: update IMPLEMENTATION.md to reflect v0.2.0 actual scope #114

Job	Run time
Lint and Type Check	14s
Unit Tests	15s
Integration Tests (ubuntu-latest)	37s
Integration Tests (macos-latest)	32s
Integration Tests (windows-latest)	1m 15s
Build Extension	19s
All Checks Complete	3s
	3m 15s

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