Split Ftp plugin into Ftp and FtpServer #3451

Job	Run time
Ubuntu/Debian packaging (Ubuntu 20.04)	10m 35s
alpine 3.16.0 (musl)	13m 35s
ubuntu-20.04 (package, non-mavsdk_server)	9m 10s
coverage (ubuntu-20.04)	5m 21s
ubuntu-22.04 (package, non-mavsdk_server)	7m 32s
android-arm	9m 13s
linux-armv6	5m 5s
android-arm64	7m 37s
linux-armv7	4m 46s
linux-armv6-musl	14m 54s
android-x86	9m 9s
ios	11m 21s
linux-arm64	7m 42s
linux-armv7l-musl	12m 18s
android-x86_64	7m 23s
ios_simulator	11m 38s
linux-arm64-musl	14m 44s
macOS	17m 4s
ubuntu-20.04 (mavsdk, hunter)	5m 55s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	5m 22s
macOS-framework	10m 18s
ubuntu-22.04 (style and proto check)	1m 24s
ubuntu-20.04 (mavsdk_server, superbuild)	10m 47s
Windows	16m 55s
ubuntu-22.04 (mavsdk_server, superbuild)	10m 23s
iOS XCFramework	1m 0s
	4h 1m 11s

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