WIP code documentation and various fixes

MiraAPI.Example/Buttons/Freezer/FreezeButton.cs

@@ -31,14 +31,13 @@ public class FreezeButton : CustomActionButton<PlayerControl>
         Target?.cosmetics.SetOutline(active, new Il2CppSystem.Nullable<Color>(Palette.Blue));
     }
 
-    public override bool IsTargetValid(PlayerControl target)
+    public override bool IsTargetValid(PlayerControl? target)
     {
         return true;
     }
 
-    public override bool Enabled(RoleBehaviour role)
+    public override bool Enabled(RoleBehaviour? role)
     {
         return role is FreezerRole;
     }
-
-}
+}