Add a reference project that showcases the new waitpoint primitive #2483

Job	Run time
units / 🧪 Unit Tests	16s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	2m 12s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	2m 6s
typecheck / typecheck	5m 30s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	5m 28s
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	5m 46s
	21m 18s

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