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/Shell/CMakeLists.txt

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