feat: add CollectionResponse model and tests

src/models/CollectionResponse.ts

@@ -0,0 +1,25 @@
+/**
+ * @class CollectionResponse - A generic object for responses that contain collections of objects.
+ */
+export class CollectionResponse<T> {
+  /**
+   * @property {number} count - The total count of items in the collection.
+   */
+  public count: number;
+
+  /**
+   * @property {T} items - The items in the collection.
+   */
+  public items: T;
+
+  /**
+   * @constructor - Creates a new instance of the CollectionResponse class.
+   * @param {number} count - The total count of items in the collection.
+   * @param {T} items - The items in the collection.
+   * @returns {CollectionResponse<T>} - A new instance of the CollectionResponse.
+   */
+  constructor(count: number, items: T) {
+    this.count = count;
+    this.items = items;
+  }
+}