feat(tile-group): add responsive Tile Group component

[eriklharper]

Related Issues: #8615 #6691 #6662

Summary

This PR adds the new calcite-tile-group component. It includes these responsiveness features that address #6691:

• Wrapped Tiles match width of Tiles above
• Wrapped Tiles match height of tallest Tile in the group

The changes in this PR were extracted from and depend on the changes in #8681.

[macandcheese]

Nice! Some things I saw in local testing:

This hover state needs some adjustment:

I'm also unable to see a focus outline when focused - the Tile is focused as I can navigate with keyboard "Enter" when href is present but there isn't a visual indication.

Should there be keyboard support for arrow / home / end within these groups? If so, would it change based on layout?

[eriklharper]

Should there be keyboard support for arrow / home / end within these groups? If so, would it change based on layout?

This PR is just about adding responsive layout features. I intend on addressing this in follow-up PRs tied to the #6662 epic.

[eriklharper]

This hover state needs some adjustment:

I'm also unable to see a focus outline when focused - the Tile is focused as I can navigate with keyboard "Enter" when `href` is present but there isn't a visual indication.

This is also out of scope for this PR. These issues are the responsibility of Tile, which will come in subsequent PRs after this initial PR to add tile-group is merged in.

[eriklharper]

Nice! Some things I saw in local testing:

This hover state needs some adjustment:

This has been fixed on this branch. Thanks for the suggestion!

[macandcheese]

Looks good!

(design) - should there be a hover state that is distinct from focus state? Right now they are the same cc @SkyeSeitz @ashetland