feat: Add event subscription option to webhooks (#4540)

Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

config/locales/en.yml

@@ -36,6 +36,8 @@ en:
     reset_password_failure: Uh ho! We could not find any user with the specified email.
 
   errors:
+    webhook:
+      invalid: Invalid events
     signup:
       disposable_email: We do not allow disposable emails
       invalid_email: You have entered an invalid email