feat: banner component for medium priority information

### Prerequisites

- [X] I have read the [Contributing Guidelines](https://github.com/ionic-team/ionic-framework/blob/main/.github/CONTRIBUTING.md#creating-an-issue).
- [X] I agree to follow the [Code of Conduct](https://ionicframework.com/code-of-conduct).
- [X] I have searched for [existing issues](https://github.com/ionic-team/ionic-framework/issues) that already include this feature request, without success.

### Describe the Feature Request

Being able to add a `role="log"` (when notifications need to be read in order, _e.g., stacking toast notifications on each other_ or `role="alert"` to toast notifications that are being logged to make them more accessible.

### Describe the Use Case

This will ensure that when a toast is displayed on screen, its contents will be communicated correctly to assistive technologies, such as screen readers when using the correct `role` with the toast notification.

### Describe Preferred Solution

I know `role="status"` is et on the inner `.toast-content` element but since there is an option should the developer want the toasts to be logged, I think it would work better as an option.

* - Same with `aria-live="polite"` (another feature request later) if someone needed to use `aria-live="assertive"` (which clears the speech queue of previous updates. _"off"_ should be the default anyway).

### Describe Alternatives

_No response_

### Related Code

```html

```

### Additional Information

[A toast to an accessible toast...](https://www.scottohara.me/blog/2019/07/08/a-toast-to-a11y-toasts.html)
[Defining ‘Toast’ Messages](https://adrianroselli.com/2020/01/defining-toast-messages.html)
[Designing Toast Messages for Accessibility](https://sheribyrnehaber.medium.com/designing-toast-messages-for-accessibility-fb610ac364be)

It is also acceptable to use `role="alert"` in a toast notification to stop the current reading and notify the user of an alert. Focus should not move there. It had a drawback in that it could make a user feel stranded because of the interruption and consequential stoppage of reading by the screen reader, however.

If the alert has interactive controls, then it should be a modal and not a toast notification. Toast notifications should never have interactive controls in them.