Add edit beer post, 500 page, and redirectIfLoggedIn getServerSideProps.

Implement edit beer post functionality.

Register, edit and create beer post forms are now using the same layout found in components/ui/forms/BeerPostFormPageLayout. All forms are now extracted into their own components and are now found in components.

Added redirectIfLoggedIn getServerSidesProp fn for login and register pages.

getServerSideProps/redirectIfLoggedIn.ts

@@ -0,0 +1,18 @@
+import { GetServerSideProps, GetServerSidePropsContext, Redirect } from 'next';
+import { getLoginSession } from '@/config/auth/session';
+
+const redirectIfLoggedIn = (redirect: Redirect) => {
+  const fn: GetServerSideProps = async (context: GetServerSidePropsContext) => {
+    try {
+      const { req } = context;
+      await getLoginSession(req);
+      return { redirect };
+    } catch {
+      return { props: {} };
+    }
+  };
+
+  return fn;
+};
+
+export default redirectIfLoggedIn;