Add logo to integrations

What does this MR do and why?

Partially takes care of Create logo placeholders for integrations (#356726 - closed)

Screenshots or screen recordings

Before	After

How to set up and validate locally

1. Checkout the branch
2. Visit the Settings/Integrations page
3. Validate that new logos are properly displayed

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.