Add dynamic tag type selection for "Gap" and "Box" components

[tom-leamon]

The "Gap" and "Box" components in the project are frequently used for layout purposes. Currently, these components are limited to certain tag types (like div). However, there are scenarios where it would be more semantically appropriate or functionally beneficial to use different tag types, such as ul or aside. Implementing dynamic tag type selection for these components would enhance their flexibility and semantic correctness in different contexts.

Action items:

• Update the "Gap" component to accept a prop for selecting the HTML tag type.
• Update the "Box" component to accept a prop for selecting the HTML tag type.
• Ensure that the default tag type remains div