chore: add streaming/polling v2 builders #213

Job	Run time
go-versions / go-versions	4s
Windows, Go 1.23	1m 3s
Windows, Go 1.22	2m 23s
Windows, Go 1.18	55s
Linux, Go 1.18 / Contract Tests	32s
Linux, Go 1.18 / Unit Tests and Coverage	1m 1s
Linux, Go 1.18 / Benchmarks	3m 54s
Linux, Go 1.22 / Benchmarks	3m 37s
Linux, Go 1.22 / Contract Tests	26s
Linux, Go 1.22 / Unit Tests and Coverage	1m 16s
Linux, Go 1.23 / Benchmarks	3m 49s
Linux, Go 1.23 / Contract Tests	30s
Linux, Go 1.23 / Unit Tests and Coverage	1m 18s
	20m 48s

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