LibImage: Move userspace image parsing to its own library

The image utility now uses this tool instead of parsing images on its
own.

userspace/image/CMakeLists.txt

@@ -4,13 +4,11 @@ project(image CXX)
 
 set(SOURCES
 	main.cpp
-	Image.cpp
-	Netbpm.cpp
 )
 
 add_executable(image ${SOURCES})
 target_compile_options(image PUBLIC -O2 -g)
-target_link_libraries(image PUBLIC libc ban)
+target_link_libraries(image PUBLIC libc ban libimage)
 
 add_custom_target(image-install
 	COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_BINARY_DIR}/image ${BANAN_BIN}/