UI/update global UI (#459)

* Update loading screen to use Lottie animation

- Replace simple logo with Lottie animation from loadercalendar.lottie
- Center animation on screen with full viewport coverage
- Set animation width to 175px
- Install @lottiefiles/dotlottie-react package

* update spacing event modal

* add twake workplace logo to loading screen

* update spacing create calendar modal

* fix evenchip description color

* using variant instead of sx

src/setupTests.ts

@@ -51,6 +51,14 @@ class ResizeObserverMock {
 
 (global as any).ResizeObserver = ResizeObserverMock;
 
+class IntersectionObserverMock {
+  observe() {}
+  unobserve() {}
+  disconnect() {}
+}
+
+(global as any).IntersectionObserver = IntersectionObserverMock;
+
 beforeAll(() => {
   console.warn = (...args: unknown[]) => {
     if (