config manager: support Instant

runelite-client/src/main/java/net/runelite/client/config/ConfigManager.java

@@ -39,6 +39,7 @@ import java.io.IOException;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.lang.reflect.Proxy;
+import java.time.Instant;
 import java.util.Arrays;
 import java.util.Comparator;
 import java.util.List;
@@ -460,6 +461,10 @@ public class ConfigManager
 		{
 			return Enum.valueOf((Class<? extends Enum>) type, str);
 		}
+		if (type == Instant.class)
+		{
+			return Instant.parse(str);
+		}
 		return str;
 	}
 
@@ -488,6 +493,10 @@ public class ConfigManager
 			Rectangle r = (Rectangle)object;
 			return r.x + ":" + r.y + ":" + r.width + ":" + r.height;
 		}
+		if (object instanceof Instant)
+		{
+			return ((Instant) object).toString();
+		}
 		return object.toString();
 	}
 }