added missing virtual destructors

open_engine/include/open_engine/events/event.hpp

@@ -34,6 +34,7 @@ namespace OpenEngine {
     class Event 
     {
         public:
+            virtual ~Event() = default;
             virtual EventType GetEventType() const = 0;
             virtual const char* GetName() const = 0;
             virtual int GetCategoryFlags() const = 0;

open_engine/include/open_engine/renderer/framebuffer.hpp

@@ -1,6 +1,8 @@
 #ifndef FRAMEBUFFER_HPP
 #define FRAMEBUFFER_HPP
 
+#include "open_engine/ref_scope.hpp"
+
 #include <cstdint>
 
 namespace OpenEngine {
@@ -15,6 +17,7 @@ namespace OpenEngine {
     class FrameBuffer
     {
         public:
+            virtual ~FrameBuffer() = default;
             virtual void Bind() = 0;
             virtual void Unbind() = 0;