camera: support multiple cameras within one instance #4236

Job	Run time
alpine 3.19.0 (musl)	37s
coverage (ubuntu-20.04)	45s
ubuntu-20.04 (package, non-mavsdk_server)	41s
Ubuntu/Debian packaging (Ubuntu 20.04)	43s
ubuntu-22.04 (package, non-mavsdk_server)	44s
android-arm	44s
linux-armv6	45s
ubuntu-24.04 (package, non-mavsdk_server)	45s
android-arm64	45s
linux-armv6-musl	44s
linux-armv7	32s
android-x86	38s
ios	31s
linux-arm64	45s
linux-armv7l-musl	45s
android-x86_64	41s
ios_simulator_x64	45s
linux-arm64-lts	40s
linux-arm64-musl	44s
ios_simulator_arm64	46s
macOS x64	1s
ubuntu-20.04 (mavsdk, hunter)	1s
macOS arm64	1s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	1s
ubuntu-24.04 (style and proto check)	1s
macOS framework x64	1s
ubuntu-20.04 (mavsdk_server, superbuild)	1s
macOS framework arm64	1s
ubuntu-22.04 (mavsdk_server, superbuild)	1s
Windows	1s
ubuntu-24.04 (mavsdk_server, superbuild)	1s
ubuntu-24.04 (mavsdk_server, superbuild)	1s
ubuntu-24.04 (mavsdk_server, superbuild)	1s
iOS XCFramework	1s
	14m 14s

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