Added click sounds into UI and chat screen's Enter button

src/client/java/com/owlmaddie/ui/ChatScreen.java

 package com.owlmaddie.ui;
 
 import com.owlmaddie.network.ModPackets;
+import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.gui.DrawContext;
 import net.minecraft.client.gui.screen.Screen;
 import net.minecraft.client.gui.widget.ButtonWidget;
 import net.minecraft.client.gui.widget.TextFieldWidget;
 import net.minecraft.entity.Entity;
+import net.minecraft.sound.SoundEvents;
 import net.minecraft.text.Text;
 import org.lwjgl.glfw.GLFW;
 
@@ -77,6 +79,9 @@ public class ChatScreen extends Screen {
     public boolean keyPressed(int keyCode, int scanCode, int modifiers) {
         if (keyCode == GLFW.GLFW_KEY_ENTER || keyCode == GLFW.GLFW_KEY_KP_ENTER) {
             if (textField.isFocused()) {
+                // Play click sound
+                MinecraftClient.getInstance().player.playSound(SoundEvents.UI_BUTTON_CLICK.value(), 0.2F, 0.8F);
+
                 // Close window on ENTER key press
                 sendChatMessage();
                 return true;

src/client/java/com/owlmaddie/ui/ClickHandler.java

@@ -15,6 +15,7 @@ import net.minecraft.client.render.Camera;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityType;
 import net.minecraft.entity.mob.MobEntity;
+import net.minecraft.sound.SoundEvents;
 import net.minecraft.util.math.Box;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.World;
@@ -189,6 +190,9 @@ public class ClickHandler {
             // Look-up conversation
             ChatDataManager.EntityChatData chatData = ChatDataManager.getClientInstance().getOrCreateChatData(closestEntity.getUuidAsString());
 
+            // Play click sound
+            client.player.playSound(SoundEvents.UI_BUTTON_CLICK.value(), 0.2F, 0.8F);
+
             if (chatData.status == ChatDataManager.ChatStatus.NONE) {
                 // Start conversation
                 ModPackets.sendGenerateGreeting(closestEntity);