[Swift refinement]: Refine HUBIcon API
[Swift refinement]: Refine HUBIcon API

Before:
```swift
icon.image(with:color:)
```

After:
```swift
icon.imageWith(size:color:)
```

The reasoning being that just “with” doesn’t give the caller enough
contextual information for what the argument refers to.
spotify/HubFramework,spotify/HubFramework,spotify/HubFramework,spotify/HubFramework