feat: add Model and Controller class, improve structure

model/userModel.js

@@ -0,0 +1,19 @@
+//------------------------------------------------>
+// Imports
+//------------------------------------------------>
+
+const { Model } = require("../Structures/Classes/Model");
+
+//------------------------------------------------>
+// UserModel
+//------------------------------------------------>
+
+class UserModel extends Model {
+    initialize() {
+        // The initialize method is required in each instance of the Model class!!!
+    }
+
+    async getUserById() {
+        // Additional classes are optional and can be used to interact with the DB Pool, this.pool!
+    }
+}