Add support for deferred checkpoints #2168

Job	Run time
units / 🧪 Unit Tests	2m 12s
typecheck / typecheck	3m 24s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	1m 51s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	1m 48s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	3m 54s
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	5m 18s
	18m 27s

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