Added debug renderer + imgui renderer

All code made by gemini with some help

Juliet/include/Engine/Debug/MemoryDebugger.h

@@ -0,0 +1,13 @@
+#pragma once
+#include <Juliet.h>
+#include <Core/Memory/MemoryArena.h>
+
+namespace Juliet
+{
+    class JULIET_API MemoryDebugger
+    {
+    public:
+        static void DrawMemoryArena(const char* name, const MemoryArena& arena);
+        static void DrawGlobalArenas();
+    };
+}