feat(sdk): add the typed TypeScript client #421

Job	Run time
Web app	1m 3s
npm launcher	33s
Agent runtime suite	19s
Static checks	16s
Protocol suite	1m 20s
macOS build and protocol suite	2m 59s
Linux E2E (Docker)	2m 51s
macOS E2E (WKWebView)	0s
	9m 21s

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