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/components/Event/AddDescButton.tsx

@@ -32,7 +32,7 @@ export function AddDescButton({
     <>
       {!showDescription && (
         <FieldWithLabel label=" " isExpanded={showMore}>
-          <Box display="flex" gap={1} mb={1}>
+          <Box display="flex" gap={1}>
             <Button
               startIcon={<DescriptionIcon />}
               onClick={() => setShowDescription(true)}