Further work on support for cheats

Cheats can now be enabled/disabled and games can be launched with cheats

arm9/source/cheats/ICheatCategory.h

@@ -0,0 +1,17 @@
+#pragma once
+
+class CheatCategory;
+class Cheat;
+
+class ICheatCategory
+{
+public:
+    virtual ~ICheatCategory() = default;
+
+    virtual bool GetIsMaxOneCheatActive() const = 0;
+    virtual const CheatCategory* GetCategories(u32& numberOfCategories) const;
+    virtual const Cheat* GetCheats(u32& numberOfCheats) const;
+
+protected:
+    ICheatCategory() = default;
+};