[Tab Groups] Break down empty tab list illustration

- Break down empty tab illustration into individual components
- Meant to allow us to animate each component individually

Change-Id: I5fd00c01c53df9b8549f315d079402adef94b92e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6042182
Reviewed-by: Sky Malice <skym@chromium.org>
Reviewed-by: Calder Kitagawa <ckitagawa@chromium.org>
Commit-Queue: Fiaz Muhammad <mfiaz@google.com>
Cr-Commit-Position: refs/heads/main@{#1393116}