Add Agent Factories Authoring Surface #3071

Job	Run time
Node.js SDK Tests (ubuntu-latest, default)	25s
Node.js SDK Tests (windows-latest, default)	7m 28s
Node.js SDK Tests (macos-latest, default)	4m 24s
Node.js SDK Tests (macos-latest, inprocess)	3m 50s
Node.js SDK Tests (windows-latest, inprocess)	8m 35s
Node.js SDK Tests (ubuntu-latest, inprocess)	23s
	25m 5s

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