Introduces the following properties in the config that take
precedence over `config.snapshotPathTemplate`.

```ts
export default {
  expect: {
    toHaveScreenshot: {
      pathTemplate: '__screenshots__{/projectName}/{testFilePath}/{arg}{ext}',
    },
    toMatchAriaSnapshot: {
      pathTemplate: '__snapshots__/{testFilePath}/{arg}{ext}',
    },
  },
};
```

Additionally, changes the default template for aria snapshots to:
```
{snapshotDir}/{testFileDir}/{testFileName}-snapshots/{arg}{ext}
```
This is technically a breaking change.