Refactor BeerPostHeader, refactor login and register

- Updated BeerPostHeader in /id page to use semantic HTML tags
- Removed the getServerSidesProps fn in /login and /register. Moved the redirect logic over to the client, will redirect on the client side.
- Added delete BeerPost option on the edit page.

getServerSideProps/redirectIfLoggedIn.ts

@@ -1,28 +0,0 @@
-import { GetServerSideProps, GetServerSidePropsContext, Redirect } from 'next';
-import { getLoginSession } from '@/config/auth/session';
-import findUserById from '@/services/User/findUserById';
-
-const redirectIfLoggedIn = (redirect: Redirect) => {
-  const fn: GetServerSideProps = async (context: GetServerSidePropsContext) => {
-    try {
-      const { req } = context;
-      const session = await getLoginSession(req);
-
-      const { id } = session;
-
-      const user = await findUserById(id);
-
-      if (!user) {
-        throw new Error('Could not get user.');
-      }
-
-      return { redirect };
-    } catch {
-      return { props: {} };
-    }
-  };
-
-  return fn;
-};
-
-export default redirectIfLoggedIn;