feat: Dropdown with badges view

[GioeEng]

Proposal: Dropdown display with synchronized badges with multiple selection. It’s convenient when the dropdown elements are numerous and you need to delete a selected item.

[akorchev]

Hi @GioeEng,

Thank you for your contribution! It will be a valuable addition to the Radzen.Blazor components.

We will make a few changes in the rendering and property name (we prefer pill instead of badge). The changes will be pushed to this branch.

[yordanov]

This is how the chips look with the last commit:

Styles will be further refined once we introduce a standalone Chip component.

[GioeEng]

Perfect! Thanks for the implemantation.