Split Ftp plugin into Ftp and FtpServer #3465

Job	Run time
coverage (ubuntu-20.04)	5m 20s
ubuntu-20.04 (package, non-mavsdk_server)	9m 46s
alpine 3.16.0 (musl)	18m 1s
Ubuntu/Debian packaging (Ubuntu 20.04)	10m 4s
ubuntu-22.04 (package, non-mavsdk_server)	6m 56s
android-arm	7m 21s
linux-armv6	6m 19s
android-arm64	10m 59s
linux-armv6-musl	15m 41s
ios	7m 5s
android-x86	6m 48s
linux-armv7l-musl	15m 42s
ios_simulator	12m 17s
android-x86_64	7m 10s
linux-arm64-musl	16m 18s
linux-armv7	8m 9s
linux-arm64	7m 8s
macOS	18m 24s
ubuntu-20.04 (mavsdk, hunter)	7m 55s
macOS-framework	17m 27s
ubuntu-20.04 (non-mavsdk_server, non-superbuild)	8m 53s
ubuntu-22.04 (style and proto check)	1m 23s
Windows	16m 33s
ubuntu-20.04 (mavsdk_server, superbuild, RelWithDebInfo)	19m 36s
ubuntu-20.04 (mavsdk_server, superbuild, Debug)	12m 22s
ubuntu-22.04 (mavsdk_server, superbuild, RelWithDebInfo)	14m 54s
ubuntu-22.04 (mavsdk_server, superbuild, Debug)	15m 39s
iOS XCFramework	1m 52s
	5h 6m 2s

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