chore: add migration that adds is_system column and inserts system user

src/migrations/20231212094343-unleash-system-user.js

@@ -0,0 +1,25 @@
+'use strict';
+
+exports.up = function (db, callback) {
+    db.runSql(
+        `
+        ALTER TABLE users ADD COLUMN IF NOT EXISTS is_system BOOLEAN NOT NULL DEFAULT FALSE;
+        DELETE FROM users WHERE id = -1337;
+        INSERT INTO users
+          (id, name, username, email, created_by, is_system) 
+        VALUES
+          (-1337, 'Used by unleash internally for performing system actions that have no user', 'unleash_system_user', '[email protected]', -1337, true);
+        `,
+        callback,
+    );
+};
+
+exports.down = function (db, callback) {
+    db.runSql(
+        `
+        ALTER TABLE users DROP COLUMN IF EXISTS is_system;
+        DELETE FROM users WHERE id = -1337;
+        `,
+        callback,
+    );
+};