Gitlab icons

[god-damnit]

Description

added Gitlab icons (i hope there exists mdi:gitlab)

Context

Types of changes

• [ ] Bad / Deleted sites removal
• [ ] Grammar / Markdown fixes
• [ ] Content addition (sites, projects, tools, etc.)
• [ ] New Wiki section

Checklist:

• [ ] I have read the contribution guide.
• [ ] I have made sure to search before making any changes.
• [ ] My code follows the code style of this project.

[hugo9655]

You should test on gitpod to make sure it works first