Added debug renderer + imgui renderer

All code made by gemini with some help

Juliet/include/Core/Application/IApplication.h

@@ -2,6 +2,12 @@
 
 namespace Juliet
 {
+    struct RenderPass;
+    struct CommandList;
+    struct Texture;
+    struct ColorTargetInfo;
+    struct DepthStencilTargetInfo;
+
     class IApplication
     {
       public:
@@ -10,5 +16,16 @@ namespace Juliet
         virtual void Shutdown()  = 0;
         virtual void Update()    = 0;
         virtual bool IsRunning() = 0;
+
+        // Accessors for Engine Systems
+        virtual struct Window*         GetPlatformWindow() = 0;
+        virtual struct GraphicsDevice* GetGraphicsDevice() = 0;
+
+        // Render Lifecycle (Engine-Managed Render Loop)
+        virtual void                    OnPreRender(CommandList* cmd)                   = 0;
+        virtual void                    OnRender(RenderPass* pass, CommandList* cmd)    = 0;
+        virtual ColorTargetInfo         GetColorTargetInfo(Texture* swapchainTexture)   = 0;
+        virtual DepthStencilTargetInfo* GetDepthTargetInfo()                            = 0;
+        virtual struct Camera           GetDebugCamera()                                = 0;
     };
 } // namespace Juliet