initial scaffolding for e2e, smoke, integration tests #1895

Job	Run time
TypeScript Unit Tests (windows-latest)	1m 33s
Lint	18s
TypeScript Unit Tests (ubuntu-latest)	41s
Create VSIX	35s
Smoke Tests (ubuntu-latest)	49s
Smoke Tests (windows-latest)	2m 5s
Smoke Tests (macos-latest)	1m 15s
Integration Tests	0s
E2E Tests	0s
	7m 16s

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