BuildSystem: Cleanup userspace directory layout

userspace programs are now in userspace/programs
userspace tests are now in userspace/tests

This makes listing userspace projects much cleaner. Libraries were
already separated to their own directory, so other programs should also.

userspace/CMakeLists.txt

@@ -1,62 +1,6 @@
-set(USERSPACE_PROJECTS
-	cat
-	cat-mmap
-	chmod
-	cp
-	dd
-	dhcp-client
-	echo
-	getopt
-	http-server
-	id
-	image
-	init
-	loadfont
-	loadkeys
-	ls
-	meminfo
-	mkdir
-	nslookup
-	poweroff
-	resolver
-	rm
-	Shell
-	sleep
-	snake
-	stat
-	sudo
-	sync
-	tee
-	Terminal
-	test
-	test-framebuffer
-	test-globals
-	test-mmap-shared
-	test-mouse
-	test-popen
-	test-sort
-	test-tcp
-	test-udp
-	test-unix-socket
-	test-window
-	touch
-	u8sum
-	whoami
-	WindowServer
-	yes
-)
-
-add_subdirectory(libraries)
-
 add_custom_target(userspace)
 
 #add_subdirectory(aoc2023)
-
-foreach(project ${USERSPACE_PROJECTS})
-	add_subdirectory(${project})
-	add_dependencies(userspace ${project})
-	# This is to allow cmake to link when libc updates
-	target_link_options(${project} PRIVATE -nolibc)
-	# Default compile options
-	target_compile_options(${project} PRIVATE -g -O2)
-endforeach()
+add_subdirectory(libraries)
+add_subdirectory(programs)
+add_subdirectory(tests)