Use InkResponse instead of GestureDetector

[clragon]

I believe, LikeButton should use InkResponse instead of GestureDetector inside the code here. The InkResponse can then also use the appropriate HoverColor and HighlightColor.

This can also be seen in Twitters design:

This would also provide changing the Cursor automatically on hover, on Desktop / Web.

To perfectly recreate the Twitter behaviour, a custom InkHighlight and a MouseRegion might be needed, instead of InkResponse.

Furthermore, I believe that if onTap is null, the LikeButton should be disabled.
the Icon and Text inside of the LikeButton should then change its Color to a disabled state.
It would be nice if LikeButton had its own ButtonStyle, with appropriate MaterialStateProperty like other buttons.

This would help to make LikeButton feel more like official Flutter widgets.