added an extension for color memory challenge.

[1911aditi]

Description

The idea is to present a grid of colored squares to the player for a few seconds, then hide the colors and challenge the player to click the squares in the correct order based on the original color sequence
Fixes: #2371

<2371>

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• I have made this from my own
• I have taken help from some online resourses
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

ATTACH SCREEN-SHOTS / DEPLOYMENT LINK

[github-actions]

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