chore: general cleanup in code (removed unused includes and cosmetic stuff

Kernel/Include/VM/Heap.h

@@ -15,7 +15,7 @@ typedef struct  __attribute__((aligned(16))) VMHeapBlockHeader {
     struct VMHeapBlockHeader* next;
     struct VMHeapBlockHeader* previous;
     UInt64 size;
-    bool isFree;
+    Boolean isFree;
 } VMHeapBlockHeader;
 
 void HeapInitialize();

Kernel/Include/VM/PMM.h

@@ -1,6 +1,5 @@
 #pragma once
 #include <Types.h>
-#include "../Common/bootinfo.h"
 
 enum {
     kVMPageSize = 4096,

Kernel/Include/VM/VMM.h

@@ -25,11 +25,12 @@ enum {
     kVMKernelVMA   = 0xFFFFFFFF80000000,
     kHHDMOffset    = 0xFFFF888000000000,
     kVMFbVirtBase  = 0xFFFFFFFFFC000000,
+    kKernelPhysBase = 0x40100000,
 };
 
 
 static inline Address VMKernelVirtToPhys(Address virt) {
-    return virt - 0xFFFFFFFF80100000 + 0x40100000; // TODO: hardcode is awful
+    return virt - 0xFFFFFFFF80100000 + kKernelPhysBase;
 }
 
 static inline Address VMPhysToHHDM(Address phys) {