[UI] Display Devfile Icon (Metadata tab)

[rm3l]

/kind feature
/area Web-UI

Which functionality do you think we should add?

The "Icon" field displays the raw URL. It might make sense to resolve the URL and display the actual icon when possible.

cc @ehsavoie

Why is this needed?

• visually categorize the Devfile

Acceptance criteria

• display the icon with a standard img tag, next to the input
• hardcode the size of the img to the same height of the input field