feat: add support for `smithy.protocols#rpcv2Cbor` protocol #2907

Job	Run time
jvm (8)	5m 5s
all-platforms (ubuntu-latest)	11m 4s
jvm (11)	4m 50s
all-platforms (macos-latest)	13m 36s
jvm (17)	5m 4s
jvm (21)	7m 14s
all-platforms (windows-latest)	17m 51s
	1h 4m 44s

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