BuildSystem: Move all userpace libraries under the userspace directory

As the number of libraries is increasing, root directory starts to
expand. This adds better organization for libraries

userspace/libraries/LibC/CMakeLists.txt

@@ -0,0 +1,68 @@
+cmake_minimum_required(VERSION 3.26)
+
+project(libc CXX ASM)
+
+set(LIBC_SOURCES
+	arpa/inet.cpp
+	assert.cpp
+	ctype.cpp
+	dirent.cpp
+	fcntl.cpp
+	grp.cpp
+	malloc.cpp
+	netdb.cpp
+	printf_impl.cpp
+	pwd.cpp
+	scanf_impl.cpp
+	signal.cpp
+	stdio.cpp
+	stdlib.cpp
+	string.cpp
+	strings.cpp
+	stropts.cpp
+	sys/banan-os.cpp
+	sys/mman.cpp
+	sys/select.cpp
+	sys/socket.cpp
+	sys/stat.cpp
+	sys/wait.cpp
+	termios.cpp
+	time.cpp
+	unistd.cpp
+	math.cpp
+	icxxabi.cpp
+
+	../../../BAN/BAN/Assert.cpp
+)
+
+add_custom_target(libc-headers
+	COMMAND ${CMAKE_COMMAND} -E copy_directory_if_different ${CMAKE_CURRENT_SOURCE_DIR}/include/ ${BANAN_INCLUDE}/
+	DEPENDS sysroot
+)
+
+add_custom_target(crtx
+	COMMAND ${CMAKE_C_COMPILER} -c ${CMAKE_CURRENT_SOURCE_DIR}/arch/${BANAN_ARCH}/crt0.S -o crt0.o
+	COMMAND ${CMAKE_C_COMPILER} -c ${CMAKE_CURRENT_SOURCE_DIR}/arch/${BANAN_ARCH}/crti.S -o crti.o
+	COMMAND ${CMAKE_C_COMPILER} -c ${CMAKE_CURRENT_SOURCE_DIR}/arch/${BANAN_ARCH}/crtn.S -o crtn.o
+)
+
+add_custom_target(crtx-install
+	COMMAND ${CMAKE_COMMAND} -E copy crt0.o ${BANAN_LIB}/
+	COMMAND ${CMAKE_COMMAND} -E copy crti.o ${BANAN_LIB}/
+	COMMAND ${CMAKE_COMMAND} -E copy crtn.o ${BANAN_LIB}/
+	DEPENDS crtx
+)
+
+add_library(libc ${LIBC_SOURCES})
+add_dependencies(libc headers crtx-install)
+
+target_compile_options(libc PRIVATE -O2 -g -Wstack-usage=512 -fno-tree-loop-distribute-patterns)
+target_compile_options(libc PUBLIC -Wall -Wextra -Werror -Wno-error=stack-usage=)
+
+add_custom_target(libc-install
+	COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_BINARY_DIR}/libc.a ${BANAN_LIB}/
+	DEPENDS libc
+	BYPRODUCTS ${BANAN_LIB}/libc.a
+)
+
+set(CMAKE_STATIC_LIBRARY_PREFIX "")