camera: support multiple cameras within one instance #4191

Job	Run time
ubuntu-20.04 (package, non-mavsdk_server)	3m 0s
coverage (ubuntu-20.04)	3m 11s
Ubuntu/Debian packaging (Ubuntu 20.04)	9m 29s
ubuntu-22.04 (package, non-mavsdk_server)	2m 44s
alpine 3.19.0 (musl)	1m 50s
ubuntu-24.04 (package, non-mavsdk_server)	2m 58s
android-arm	2m 5s
linux-armv6	1m 49s
android-arm64	2m 18s
linux-armv6-musl	1m 33s
linux-armv7	1m 48s
ios	1m 52s
linux-armv7l-musl	1m 42s
linux-arm64	1m 44s
android-x86	2m 13s
ios_simulator_x64	1s
linux-arm64-musl	1m 39s
linux-arm64-lts	1m 50s
android-x86_64	2m 7s
ios_simulator_arm64	1m 35s
ubuntu-20.04 (mavsdk, hunter)	3m 58s
ubuntu-24.04 (style and proto check)	27m 45s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	2m 12s
macOS x64	12m 57s
macOS arm64	14m 31s
Windows	1h 16m 37s
macOS framework x64	12m 56s
ubuntu-20.04 (mavsdk_server, superbuild)	27m 11s
ubuntu-22.04 (mavsdk_server, superbuild)	27m 5s
macOS framework arm64	13m 2s
ubuntu-24.04 (mavsdk_server, superbuild)	26m 57s
ubuntu-24.04 (mavsdk_server, superbuild)	26m 47s
ubuntu-24.04 (mavsdk_server, superbuild)	26m 58s
iOS XCFramework	0s
	5h 46m 24s

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