Added a stats window

include/Engine/Editor/EditorStats.h

@@ -0,0 +1,29 @@
+#include <numeric>
+#include <iomanip>
+#include <imgui/imgui.h>
+#include "../Common.h"
+#include "../GLM.h"
+#include "../OpenGL.h"
+
+class EditorStats
+{
+public:
+    EditorStats();
+    void Draw(double dt);
+
+private:
+    // FPS graph
+    const unsigned int m_SampleSize = 100;
+    unsigned int m_FrameCount = 0;
+    std::vector<double> m_FrameTimes;
+    double m_TimeAccumulator = 0.0;
+    double m_AveragedSamplesPerSecond = 10.0;
+    const unsigned int m_AveragedSampleSize = 100;
+    unsigned int m_CurrentAveragedSampleIndex = 0;
+    std::vector<double> m_AveragedSamples;
+    void drawFPSGraph(double dt);
+
+    void drawRAMUsage(double dt);
+
+    void drawVRAMStats(double dt);
+};

include/Engine/Editor/EditorSystem.h

@@ -9,6 +9,7 @@
 #include "../Core/EntityFilePreprocessor.h"
 #include "../Core/EntityFileParser.h"
 #include "EditorGUI.h"
+#include "EditorStats.h"
 
 class EditorSystem : public ImpureSystem
 {
@@ -28,6 +29,7 @@ private:
     EntityWrapper m_Camera = EntityWrapper::Invalid;
     DebugCameraInputController<EditorSystem>* m_DebugCameraInputController;
     EditorGUI* m_EditorGUI;
+    EditorStats* m_EditorStats;
 
     void OnEntitySelected(EntityWrapper entity);
 };