Change main UI layout and add VINs to add and upload forms (#16)

* Add new upload update package form
Add new add vehicle form
Add new side menu layout
Add new toolbar layout
Update and add unit tests

* Enable add get and add vehicles

* Integration issues with ota_update service

* Update get vehicle JSON format

* Fix related unit test
Add release notes field

* Add StatusContext to display error and status messages

src/components/Contexts/__mocks__/VehicleContext.jsx

@@ -0,0 +1,24 @@
+import React from "react";
+
+let busy = false;
+let vehicles = [];
+let error = null;
+
+export const VehicleProvider = ({ children }) => {
+  return <div data-testid="mocked-vehicleprovider">{children}</div>;
+};
+
+export const useVehicleContext = () => ({
+  busy,
+  vehicles,
+  getVehicles: jest.fn(() => vehicles),
+  addVehicle: jest.fn(),
+});
+
+export const setBusy = (val) => {
+  busy = val;
+};
+
+export const setVehicles = (val) => {
+  vehicles = val;
+};