Split Ftp plugin into Ftp and FtpServer #3473

Job	Run time
Ubuntu/Debian packaging (Ubuntu 20.04)	7m 53s
ubuntu-20.04 (package, non-mavsdk_server)	9m 35s
coverage (ubuntu-20.04)	5m 16s
ubuntu-22.04 (package, non-mavsdk_server)	7m 15s
alpine 3.16.0 (musl)	25m 7s
android-arm	8m 7s
linux-armv6	6m 24s
android-arm64	7m 7s
linux-armv6-musl	15m 42s
linux-armv7	6m 4s
ios	9m 24s
android-x86	9m 25s
linux-armv7l-musl	14m 49s
ios_simulator	10m 37s
linux-arm64	6m 33s
android-x86_64	8m 10s
linux-arm64-musl	16m 21s
macOS	12m 57s
ubuntu-20.04 (mavsdk, hunter)	9m 7s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	6m 54s
ubuntu-22.04 (style and proto check)	1m 44s
macOS-framework	17m 17s
ubuntu-20.04 (mavsdk_server, superbuild, RelWithDebInfo)	14m 26s
Windows	17m 10s
ubuntu-20.04 (mavsdk_server, superbuild, Debug)	14m 32s
ubuntu-22.04 (mavsdk_server, superbuild, RelWithDebInfo)	13m 34s
ubuntu-22.04 (mavsdk_server, superbuild, Debug)	13m 36s
iOS XCFramework	1m 2s
	4h 56m 8s

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