chore: added class TextFieldFocusChangeEvent

src/main/java/net/jasonhk/minecraft/mods/torvaldsinput/gui/events/TextFieldFocusChangeEvent.java

@@ -0,0 +1,20 @@
+package net.jasonhk.minecraft.mods.torvaldsinput.gui.events;
+
+import net.minecraftforge.eventbus.api.Event;
+
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.ToString;
+
+@EqualsAndHashCode(callSuper = false)
+@ToString
+public class TextFieldFocusChangeEvent extends Event
+{
+    @Getter
+    private final boolean focused;
+
+    public TextFieldFocusChangeEvent(boolean focused)
+    {
+        this.focused = focused;
+    }
+}