generic SinkCollector for sinks

[sam-goodwin]

Found a bug in Collectors (#50). All collectors redundantly copied a bug where the Promise was not awaited.

punchcard/packages/punchcard/lib/kinesis/collector.ts

Lines 63 to 68 in d476533

	this.sender = props.stream.forBatch(this.resource, 'ToStream', {
	depends: this.writeAccess(),
	handle: async (events, self) => {
	self.sink(events);
	}
	}) as any;

Bug is fixed, but we should make a generic SinkCollector for all types that implement Sink<T>.