Added communication library

[8kdesign]

Description

Added communication module.

The communication module allows for real-time interaction between different users, creating new possibilities for what users can do on Source Academy.

Type of change

• [ ] New feature (non-breaking change which adds functionality)
• [ ] This change requires a documentation update

How Has This Been Tested?

• Added testing for communications module logic
• Created sample scenarios for usage of modules in Source Academy

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [ ] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules