[feature]: Add images to the game

[Rafajrg21]

What does this PR do?

This PR makes it so instead of just letters, it shows 16 cards from a collection of images, some styling was modified as well to have a better presentation of such images. This new functionality can be extended by creating different themes for the game, adding replay value.

The images are smash bros related, because it was the first thing I thought of.

Related PRs and Issues

This solves issue #75

Screenshots of changes made to the webapp.

Have you updated the README.md file?

• [ ] yes
• [x] no

Have you made any big breakthrough change?

• [ ] yes
• [x] no

Is the code beautified?

• [x] yes
• [ ] no

Is the code clear to understand with proper variable naming and comments?

• [x] yes
• [ ] no

[Aatmaj-Zephyr]

Thanks for the work! Please fill the pull request template with appropriate checklist and screenshots so I can approve and merge it

[Rafajrg21]

@Aatmaj-Zephyr are those screenshots enough? Should I add anything else?

[Aatmaj-Zephyr]

Thanks