feat: ion-datetime - week view

### Prerequisites

- [x] I have read the [Contributing Guidelines](https://github.com/ionic-team/ionic-framework/blob/main/docs/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

I want the component to show dates weekly, much like a calendar plugin's weekview, instead of displaying an entire month's worth of dates at once. Is this possible using ion-datetime? something like below.


### Describe the Use Case

I want the component to show dates weekly, much like a calendar plugin's weekview, instead of displaying an entire month's worth of dates at once. Is this possible using ion-datetime? something like below.


### Describe Preferred Solution

_No response_

### Describe Alternatives

_No response_

### Related Code

_No response_

### Additional Information

_No response_

The issue names the ion-datetime component but provides no file or test references. Start by locating its component entry point and reviewing how it currently displays month dates; define the week-view behavior and verify that the component displays one week of dates as requested.

Written by the indexing model from the issue text.