[feat] Desktop render color

kernel/memory/heap.cpp

@@ -1,6 +1,6 @@
 #include <memory/heap.h>
 #include <memory/pmm.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 struct heap_block {
     UINTN  size;   // includes header; bit 0 = 1 used, 0 free

kernel/memory/pmm.cpp

@@ -1,5 +1,5 @@
 #include <memory/pmm.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 extern EFI_SYSTEM_TABLE *ST;