add rss feed with common actions

migration.sql

@@ -45,3 +45,9 @@ CREATE TABLE IF NOT EXISTS "user_trip" (
 	FOREIGN KEY(trip_details_id) REFERENCES trip_details(id),
 	CONSTRAINT unq UNIQUE (user_id, trip_details_id) -- allow user to participate only once for each trip
 );
+
+CREATE TABLE IF NOT EXISTS "log" (
+	"id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
+	"msg" text NOT NULL,
+	"created_at" text NOT NULL DEFAULT CURRENT_TIMESTAMP
+);