feat: migrated some sources to kernel core

yak-kernel/CMakeLists.txt

@@ -61,6 +61,8 @@ endif ()
 file(GLOB KERNEL_SOURCES
         src/rt/*.c
         src/ulibc/*.c)
+file(GLOB_RECURSE KERNEL_CORE_SOURCES
+        src/rt/core/**.c)
 file(GLOB PLATFORM_GENERIC_SOURCES src/platform/generic/*.c)
 
 if (${USE_DEBUG})
@@ -98,6 +100,7 @@ endforeach ()
 # Define aggregate sources
 set(KERNEL_SOURCE_FILES
         ${KERNEL_SOURCES}
+        ${KERNEL_CORE_SOURCES}
         ${LIMINE_KERNEL_SOURCES}
         ${DEBUG_KERNEL_SOURCES}
         ${PLATFORM_GENERIC_SOURCES}