(Add) UserEcho Model

For user tabs in chat.

app/UserEcho.php

@@ -0,0 +1,73 @@
+<?php
+/**
+ * NOTICE OF LICENSE.
+ *
+ * UNIT3D is open-sourced software licensed under the GNU General Public License v3.0
+ * The details is bundled with this project in the file LICENSE.txt.
+ *
+ * @project    UNIT3D
+ *
+ * @license    https://www.gnu.org/licenses/agpl-3.0.en.html/ GNU Affero General Public License v3.0
+ * @author     singularity43
+ */
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class UserEcho extends Model
+{
+    /**
+     * Indicates If The Model Should Be Timestamped.
+     *
+     * @var bool
+     */
+    public $timestamps = true;
+
+    /**
+     * The Database Table Used By The Model.
+     *
+     * @var string
+     */
+    protected $table = 'user_echoes';
+
+    /**
+     * Belongs To A User.
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    /**
+     * Belongs To A Chatroom.
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function room()
+    {
+        return $this->belongsTo(Chatroom::class);
+    }
+
+    /**
+     * Belongs To A Target.
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function target()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    /**
+     * Belongs To A Bot.
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function bot()
+    {
+        return $this->belongsTo(Bot::class);
+    }
+}