add prettier for auto formatting (#231)

* [Prettier] Add "prettier"

Makes the formatting of the code consistent.
By using the eslint-plugin-prettier formatting issues will be highlighted as a lint error.
These errors will be auto fixed by running "lint --fix" (which can be done automatically on file save)

* [Prettier] Add "prettier" - Fix formatting

src/components/library/LibraryToolbarMenu.tsx

@@ -18,10 +18,7 @@ const LibraryToolbarMenu: React.FC = () => {
 
     return (
         <>
-            <IconButton
-                onClick={() => setOpen(!open)}
-                color={active ? 'warning' : 'default'}
-            >
+            <IconButton onClick={() => setOpen(!open)} color={active ? 'warning' : 'default'}>
                 <FilterList />
             </IconButton>
             <LibraryOptionsPanel open={open} onClose={() => setOpen(false)} />