Added ability to put emojis into repository name

What does this MR do?

This merge request added the ability to put some emojis into a repository name.

Are there points in the code the reviewer needs to double check?

Ensure that regexp used is correct, I used the following list: http://www.unicode.org/Public/emoji/1.0/emoji-data.txt

Why was this MR needed?

This is not a mandatory MR but it should be cool as it is in the mood now to use emojis on repository names.

Screenshots (if relevant)

This is not possible actually:

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?