miner: add package feerate vector to `CBlockTemplate` #383

Job	Run time
test each commit	0s
ASan + LSan + UBSan + integer, no depends, USDT	1h 9m 19s
macOS 14 native, arm64, no depends, sqlite only, gui	19m 30s
Win64 native, VS 2022	2h 9m 47s
macOS 14 native, arm64, fuzz	11m 5s
Win64 native fuzz, VS 2022	46m 26s
	4h 36m 7s

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