feat(controls): Add `TimePicker` control

[OneEyedOlaf]

Pull request type

Please check the type of change your PR introduces:

• [ ] Update
• [ ] Bugfix
• [x] Feature
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] Documentation content changes

What is the current behavior?

The library currently lacks a dedicated TimePicker control.

What is done?

1. Basic control structure and logic.
2. A functional UI that works correctly in the light theme.

What is the new behavior?

This PR introduces a new TimePicker control.

Other information

As I am new to WPF and not yet fully familiar with the wpf-ui styling and brush system, I have only implemented the basic functionality and a simple UI for the light theme.