feat: Allow admins to disable the login capability of an account

# Conflicts:
#	src/admin/user/commands.rs

src/database/maps.rs

@@ -394,6 +394,10 @@ pub(super) static MAPS: &[Descriptor] = &[
 		name: "userid_lock",
 		..descriptor::RANDOM_SMALL
 	},
+	Descriptor {
+		name: "userid_login_disabled",
+		..descriptor::RANDOM_SMALL
+	},
 	Descriptor {
 		name: "userid_presenceid",
 		..descriptor::RANDOM_SMALL