Sort imports from all files

Add "prettier" script in `package.json` to check if all files are
compliant.

Sort all imports and format all files by running `npm run lint -- --fix`
followed by `npm run prettier -- --write`.

Gitlab #29

Change-Id: Id80402d1344c3bc611f66a46cffeee5f2c375bd8
diff --git a/client/redux/hooks.ts b/client/redux/hooks.ts
index beb95c0..3539fad 100644
--- a/client/redux/hooks.ts
+++ b/client/redux/hooks.ts
@@ -1,5 +1,6 @@
 import { TypedUseSelectorHook, useDispatch, useSelector } from 'react-redux';
-import type { RootState, AppDispatch } from './store';
+
+import type { AppDispatch, RootState } from './store';
 
 // Use throughout your app instead of plain `useDispatch` and `useSelector`
 export const useAppDispatch: () => AppDispatch = useDispatch;