Refactor Footer module + Add basic tesst file

components/Footer/Footer.spec.js

@@ -0,0 +1,9 @@
+import { mount } from "@vue/test-utils";
+import Footer from "./";
+
+describe("Footer", () => {
+  it("should render Footer instance", () => {
+    const wrapper = mount(Footer);
+    expect(wrapper.exists()).toBe(true);
+  });
+});