gimbal: add attitude #3743

Job	Run time
alpine 3.19.0 (musl)	9m 58s
Ubuntu/Debian packaging (Ubuntu 20.04)	5m 47s
ubuntu-20.04 (package, non-mavsdk_server)	6m 26s
coverage (ubuntu-20.04)	5m 3s
ubuntu-22.04 (package, non-mavsdk_server)	5m 18s
android-arm	5m 19s
linux-armv6	5m 2s
android-arm64	5m 26s
android-x86	5m 23s
linux-armv7	4m 48s
linux-armv6-musl	9m 51s
ios	8m 22s
android-x86_64	5m 19s
linux-arm64	4m 55s
linux-armv7l-musl	10m 0s
ios_simulator	7m 17s
linux-arm64-musl	10m 51s
ubuntu-20.04 (mavsdk, hunter)	3m 57s
macOS	14m 8s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	5m 10s
macOS-framework	12m 12s
ubuntu-22.04 (style and proto check)	1m 30s
ubuntu-20.04 (mavsdk_server, superbuild)	12m 32s
Windows	12m 55s
ubuntu-22.04 (mavsdk_server, superbuild)	11m 6s
iOS XCFramework	1m 17s
	3h 9m 52s

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