Suggestion: Replace hard-coded URLS with ENV parameters

https://playwright.dev/docs/test-parameterize#passing-environment-variables

### For example:
```
import "dotenv/config";

...

async goto() {
  await this.page.goto(proccess.env.TESTS_URL);
}
```

In my `.env` file I've configured the following:

```
TESTS_URL=http://localhost:3000
TESTS_BACKEND_API_URL=https://foo.bar
```