Redirect users to "awaiting approval" message on register (#231)

Ref #81 - this implements a "your request has been sent" message

 ![image](/attachments/61dc3f5e-2706-46f9-a1ca-4efe3f526ff3)

Co-authored-by: FloatingGhost <hannah@coffee-and-dreams.uk>
Reviewed-on: https://akkoma.dev/AkkomaGang/pleroma-fe/pulls/231

src/components/awaiting_email_confirmation/awaiting_email_confirmation.js

@@ -0,0 +1,4 @@
+export default {
+  computed: {
+  }
+}