remove users from trip after they have read the notificatoin

migration.sql

@@ -160,6 +160,7 @@ CREATE TABLE IF NOT EXISTS "notification" (
 	"read_at" DATETIME,
 	"created_at" DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL,
 	"category" TEXT NOT NULL,
+	"action_after_reading" TEXT,
 	"link" TEXT
 );