[Feat] docs/images: Add 2022-04-21-opencv-spatial-ai-contest-top-10-finalist.png

[gmacario]

📑 Description

Source: Email from Phil Nelson, 2022-04-21 Signed-off-by: Gianpaolo Macario gmacario@gmail.com

✅ Checks

• [x] My pull request adheres to the code style of this project
• [ ] My code requires changes to the documentation
• [x] I have updated the documentation as required
• [ ] All the tests have passed

ℹ Additional Information

[gmacario]

@alv67, @gteti: Maybe we should also include this .png inside

• README.md
• docs/index.rst

Please add your contributions here, thanks!