Refactor and remove gameplay ability system, replace with own one

Source/ProjectEleri/Data/EleriGlobalKeyValueStruct.h

@@ -0,0 +1,16 @@
+
+#pragma once
+#include "CoreMinimal.h"
+#include "Engine/DataTable.h"
+
+#include "EleriGlobalKeyValueStruct.generated.h"
+
+USTRUCT(BlueprintType)
+struct FEleriGlobalKeyValueStruct : public FTableRowBase
+{
+	GENERATED_BODY()
+	
+public:
+	UPROPERTY(EditAnywhere, BlueprintReadWrite)
+	float Value;
+};