[Draft] Implement `rawchainlocksig` and `rawtxlocksig` (#2930) #3565

Job	Run time
lint	51s
CMake-Linux	4m 45s
CMake-Linux-latest	3m 47s
Depends-ARM 32-bit	2m 14s
CMake-macOS	10m 49s
CMake-macOS-latest	6m 30s
Depends-AARCH64	2m 18s
Native-x64-Linux	5m 29s
Native-x64-Linux-latest	4m 26s
Depends-Win64	2m 26s
Native-x64-macOS	9m 13s
Depends-32-bit + dash	2m 34s
Native-arm64-macOS-latest	4m 57s
Depends-x86_64 Linux	2m 25s
Depends-macOS 10.12	2m 32s
ARM 32-bit [GOAL:install]	4m 45s
AARCH64 [GOAL:install]	4m 53s
Win64 [GOAL:deploy]	5m 52s
x86_64 Linux [GOAL:install]	4m 49s
macOS 10.12 [GOAL:deploy]	4m 15s
Test-Depends-${{ matrix.config.name }}	0s
Native-${{ matrix.config.name }}-tests	0s
	1h 29m 50s

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