info: add flight information subscription (#2285) #3835

Job	Run time
coverage (ubuntu-20.04)	5m 7s
ubuntu-20.04 (mavsdk_server, superbuild)	12m 6s
ubuntu-22.04 (mavsdk_server, superbuild)	10m 56s
Ubuntu/Debian packaging (Ubuntu 20.04)	5m 21s
ubuntu-20.04 (package, non-mavsdk_server)	6m 26s
linux-armv6	39m 38s
ubuntu-22.04 (package, non-mavsdk_server)	5m 29s
ubuntu-22.04 (style and proto check)	1m 26s
linux-armv7	4m 32s
linux-arm64	5m 2s
alpine 3.19.0 (musl)	9m 40s
android-arm	5m 35s
android-arm64	5m 33s
linux-armv6-musl	10m 16s
ios	9m 19s
android-x86	5m 24s
linux-armv7l-musl	10m 24s
ios_simulator	15m 58s
android-x86_64	14m 46s
linux-arm64-musl	15m 15s
macOS	21m 28s
ubuntu-20.04 (mavsdk, hunter)	3m 48s
macOS-framework	11m 7s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	5m 18s
Windows	11m 22s
iOS XCFramework	1m 14s
	4h 12m 30s

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