is active toggle on layer

this will be used to turn off a layer but we do not want to delete them
from the layer stack

SakuraCore/src/Layer.cpp

@@ -2,5 +2,5 @@
 #include <string>
 
 namespace SakuraVNE {
-Layer::Layer(const std::string &name) : m_LayerName(name) {}
+Layer::Layer(const std::string &name) : m_LayerName(name), isActive(true) {}
 } // namespace SakuraVNE

SakuraCore/src/Layer.h

@@ -10,7 +10,7 @@ public:
     virtual ~Layer() = default;
 
     virtual void OnFrame(Uint64 timestamp) {}
-    virtual void OnEvent() {}
+    virtual void OnEvent(/*Event &e*/) {}
     virtual void OnAttach() {}
     virtual void OnDetach() {}
     virtual void OnImGuiRender() {}
@@ -19,5 +19,6 @@ public:
 
 protected:
     std::string m_LayerName;
+    bool isActive;
 };
 } // namespace SakuraVNE