e2e-test-utils: entry point fix + API report

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/e2e-test-utils/playwright-api-report.md

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+## API Report File for "@backstage/e2e-test-utils"
+
+> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
+
+```ts
+import { PlaywrightTestConfig } from '@playwright/test';
+
+// @public
+export function failOnBrowserErrors(): void;
+
+// @public
+export function generateProjects(): PlaywrightTestConfig['projects'];
+
+// (No @packageDocumentation comment for this package)
+```

packages/e2e-test-utils/src/playwright.ts

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+/*
+ * Copyright 2023 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export * from './playwright/index';