BuildSystem: We are now using cmake instead of plain make

I have been annoyed for a while since I had to build everything
when running the os since the buildsystem was really bad.

I wanted to rewrite the whole build system and changed to using cmake

:)

CMakeLists.txt

@@ -0,0 +1,49 @@
+cmake_minimum_required(VERSION 3.26)
+
+project(banan-os CXX ASM)
+
+set(BANAN_ARCH x86_64)
+
+set(BANAN_SYSROOT ${CMAKE_BINARY_DIR}/sysroot)
+set(BANAN_INCLUDE ${BANAN_SYSROOT}/usr/include)
+set(BANAN_BOOT ${BANAN_SYSROOT}/boot)
+set(DISK_IMAGE_PATH ${CMAKE_BINARY_DIR}/banan-os.img)
+
+add_subdirectory(kernel)
+add_subdirectory(BAN)
+add_subdirectory(libc)
+
+add_custom_target(sysroot
+	COMMAND mkdir -p ${BANAN_SYSROOT}
+	COMMAND mkdir -p ${BANAN_BOOT}
+	COMMAND mkdir -p ${BANAN_INCLUDE}
+	COMMAND cp -r ${CMAKE_SOURCE_DIR}/base/* ${BANAN_SYSROOT}/
+)
+
+add_custom_target(image
+	COMMAND ${CMAKE_COMMAND} -E env SYSROOT="${BANAN_SYSROOT}" DISK_IMAGE_PATH="${DISK_IMAGE_PATH}" ${CMAKE_SOURCE_DIR}/image.sh
+	DEPENDS kernel-install
+	DEPENDS ban-install
+	DEPENDS libc-install
+	USES_TERMINAL
+)
+
+add_custom_target(image-full
+	COMMAND ${CMAKE_COMMAND} -E env SYSROOT="${BANAN_SYSROOT}" DISK_IMAGE_PATH="${DISK_IMAGE_PATH}" ${CMAKE_SOURCE_DIR}/image-full.sh
+	DEPENDS kernel-install
+	DEPENDS ban-install
+	DEPENDS libc-install
+	USES_TERMINAL
+)
+
+add_custom_target(qemu
+	COMMAND ${CMAKE_COMMAND} -E env BANAN_ARCH="${BANAN_ARCH}" DISK_IMAGE_PATH="${DISK_IMAGE_PATH}" ${CMAKE_SOURCE_DIR}/qemu.sh
+	DEPENDS image
+	USES_TERMINAL
+)
+
+add_custom_target(bochs
+	COMMAND ${CMAKE_COMMAND} -E env DISK_IMAGE_PATH="${DISK_IMAGE_PATH}" ${CMAKE_SOURCE_DIR}/bochs.sh
+	DEPENDS image
+	USES_TERMINAL
+)