chore: improve add-task command e2e test

tests/e2e/run-jest-e2e.js

@@ -0,0 +1,19 @@
+#!/usr/bin/env node
+
+const { spawn } = require('child_process');
+const path = require('path');
+
+const args = [
+	'--config', 'jest.e2e.config.js',
+	...process.argv.slice(2)
+];
+
+const jest = spawn('jest', args, {
+	cwd: path.join(__dirname, '../..'),
+	stdio: 'inherit',
+	env: { ...process.env, NODE_ENV: 'test' }
+});
+
+jest.on('exit', (code) => {
+	process.exit(code);
+});