net_processing: Pass Peer& to ProcessMessage #516

Job	Run time
determine runners	2s
Windows native, fuzz, VS 2022	44m 44s
macOS native, fuzz	24m 41s
macOS native	43m 18s
Windows native, VS 2022	1h 40m 49s
test max 6 ancestor commits	0s
Windows-cross to x86_64, ucrt	35m 56s
lint	4m 51s
Windows-cross to x86_64, msvcrt	34m 11s
macOS-cross to x86_64	33m 55s
macOS-cross to arm64	31m 2s
i686, no IPC	1h 16m 51s
Alpine (musl)	1h 40m 0s
32 bit ARM	32m 27s
previous releases	1h 2m 20s
MSan	1h 34m 6s
TSan	1h 12m 35s
No wallet	48m 23s
fuzzer,address,undefined,integer	2h 59m 59s
ASan + LSan + UBSan + integer	1h 34m 58s
tidy	1h 51m 35s
MSan, fuzz	2h 4m 27s
Valgrind, fuzz	4h 0m 18s
Windows, ucrt, test cross-built	50m 13s
Windows, msvcrt, test cross-built	47m 46s
	1d 4h 9m 27s

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