Remove id autogeneration from db models

Remove automatic uuid v4 ID generation from the models and replace it
with `shared.NewId()`, which generates an Id depending on the config
setting

storage-new/models/User.go

@@ -27,7 +27,7 @@ type User struct {
 	// Same also applies for other types that use a UUID as primary key
 	// TODO: Change this to generate via cuid or uuid, depending on config
 	// Or remove autogeneration alltogether
-	ID string `gorm:"primarykey;default:gen_random_uuid()"`
+	ID string `gorm:"primarykey"`
 	// Username of the user (eg "max" if the full username is @max@example.com)
 	// Assume unchangable (once set by a user) to be kind to other implementations
 	// Would be an easy avenue to fuck with them though