Save the application_type and the contacts in the OAuth 2.0 clients

This also removes the dedicated "redirect_uris" table and makes it a field of the "oauth2_clients" table

crates/handlers/src/oauth2/registration.rs

@@ -175,6 +175,7 @@ pub(crate) async fn post(
             &clock,
             metadata.redirect_uris().to_vec(),
             encrypted_client_secret,
+            metadata.application_type,
             //&metadata.response_types(),
             metadata.grant_types().to_vec(),
             metadata.contacts.clone().unwrap_or_default(),