BuildSystem: Rework the whole cmake build system

Now files are installed using the install() command instead of manually
copying files to their destinations. This allows automatic recompilation
of headers that did not work previously

userspace/init/CMakeLists.txt

@@ -1,16 +1,9 @@
-cmake_minimum_required(VERSION 3.26)
-
-project(init CXX)
-
 set(SOURCES
 	main.cpp
 )
 
 add_executable(init ${SOURCES})
-target_compile_options(init PUBLIC -O2 -g)
-target_link_libraries(init PUBLIC libc ban)
+banan_include_headers(init ban)
+banan_link_library(init libc)
 
-add_custom_target(init-install
-	COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_BINARY_DIR}/init ${BANAN_BIN}/
-	DEPENDS init
-)
+install(TARGETS init)