camera: support multiple cameras within one instance #4248

Job	Run time
Ubuntu/Debian packaging (Ubuntu 20.04)	7m 6s
alpine 3.19.0 (musl)	10m 23s
coverage (ubuntu-20.04)	8m 5s
ubuntu-20.04 (package, non-mavsdk_server)	7m 42s
ubuntu-22.04 (package, non-mavsdk_server)	6m 18s
android-arm	6m 42s
ubuntu-24.04 (package, non-mavsdk_server)	7m 8s
linux-armv6	1m 23s
linux-armv6-musl	10m 21s
android-arm64	6m 43s
linux-armv7	34s
linux-armv7l-musl	8m 56s
android-x86	28s
linux-arm64	1m 41s
linux-arm64-musl	10m 51s
android-x86_64	6m 37s
ios	32m 27s
linux-arm64-lts	1m 27s
ios_simulator_x64	29m 25s
ios_simulator_arm64	32m 26s
macOS x64	1s
ubuntu-20.04 (mavsdk, hunter)	5m 9s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	6m 35s
macOS arm64	15m 27s
macOS framework x64	1s
ubuntu-24.04 (style and proto check)	27m 34s
macOS framework arm64	7m 4s
ubuntu-20.04 (mavsdk_server, superbuild)	32m 50s
Windows	25m 45s
ubuntu-22.04 (mavsdk_server, superbuild)	38m 52s
ubuntu-24.04 (mavsdk_server, superbuild)	42m 59s
ubuntu-24.04 (mavsdk_server, superbuild)	42m 18s
ubuntu-24.04 (mavsdk_server, superbuild)	43m 7s
iOS XCFramework	0s
	8h 4m 25s

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