List of included changes:   - Removes the floating images on the README page to improve the layout of the page.   - Adds Selfie Segmentation item to the README file.
List of included changes:
  - Removes the floating images on the README page to improve the layout of the page.
  - Adds Selfie Segmentation item to the README file.

PiperOrigin-RevId: 360464070
Change-Id: I163198f5cd2ec64386f27a9531498cdb35750a5e

googlesamples/mlkit,googlesamples/mlkit,googlesamples/mlkit,googlesamples/mlkit