fix: Various general fixes and changes

kernel/src/CppLib/Alloc.cpp

@@ -9,10 +9,10 @@
 
 void* operator new(std::size_t size)
 {
-    return Memory::g_allocator->Request(size);
+    return Memory::g_heap->Request(size);
 }
 
 void operator delete(void* block)
 {
-    Memory::g_allocator->Free(block);
+    Memory::g_heap->Free(block);
 }

kernel/src/CppLib/Stream.cpp

@@ -21,7 +21,7 @@ kcp::cstringstream::~cstringstream()
 }
 
 kcp::cstringstream& kcp::cstringstream::operator<<(char c) {
-    this->string = (const char *)Memory::g_allocator->Realloc((void *)this->string, this->size + 1);
+    this->string = (const char *)Memory::g_heap->Realloc((void *)this->string, this->size + 1);
 
     if (!this->string)
     {

kernel/src/CppLib/Vector.hpp

@@ -41,7 +41,7 @@ namespace kcp
         }
 
         void push_back(T value) {
-            array = (T *)Memory::g_allocator->Realloc(array, sizeof(T) * (sz + 1));
+            array = (T *)Memory::g_heap->Realloc(array, sizeof(T) * (sz + 1));
             array[sz++] = value;
         }