Add description of external dependencies

[Tehsurfer]

Description

Add dependencies to the readmen

Type of change

Delete those that don't apply.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

How Has This Been Tested?

No code changes

Checklist:

• 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 utilized components from the Design System Library where applicable
• I have added unit tests that prove my fix is effective or that my feature works