reworked cmake, unfortunately a big one due to interdependence

- /mission is a library now, in preparation of unittests (which bring their own main)
- eive-simple is now only available in bsp=arm/q7s (but is still not compiling)
- watchdog and simple are their own executables, not configurations any more
- moved some q7s specific code into /bsp-q7s to flatten if-hierarchy in main CMakeLists.txt
- compiler and linker options are not globally applied to all targets
- linux is the default fsfw osal now, as current code does not compile on hosted

cmake/PreProjectConfig.cmake

@@ -9,6 +9,7 @@ if(DEFINED TGT_BSP)
 	endif()
 endif()
 
+
 # Disable compiler checks for cross-compiling.
 if(FSFW_OSAL MATCHES linux AND TGT_BSP)
 	if(TGT_BSP MATCHES "arm/q7s")
@@ -16,6 +17,7 @@ if(FSFW_OSAL MATCHES linux AND TGT_BSP)
 			"${CMAKE_SCRIPT_PATH}/Q7SCrossCompileConfig.cmake"
 			PARENT_SCOPE
 		)
+		
 	elseif(TGT_BSP MATCHES "arm/raspberrypi")
 		if(NOT DEFINED ENV{LINUX_ROOTFS})
 			if(NOT DEFINED LINUX_ROOTFS)