Add Gabriel Ferreira as a maintainer

[turkenh]

Description of your changes

Proposing Gabriel Ferreira (@Feggah) as a maintainer.

@Feggah is pretty active in this repository and is interested in being a maintainer.
Thanks a lot for all your contributions!

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

N/A

[hasheddan]

Awesome to see! Congrats @Feggah!

Let’s make sure to get you added to the org first — could you follow steps outlined in https://github.com/crossplane/org/blob/main/processes/new-member.md to get that process kicked off? :)

[Feggah]

Thanks for the opportunity! I'm glad to help the community as much as I can :)

I have opened the issue in crossplane/org#18

[jbw976]

@Feggah has an invitation now to join the org - once that has been accepted, then I can go ahead and merge this PR to grant maintainer status and update this repo's access permissions too :)

[Feggah]

Thanks @jbw976 ! I accepted the invitation and now officially an org member 🎉

[jbw976]

All completed! you should now have maintainer perms on this repo @Feggah! Looking forward to working alongside you 💪

[muvaf]

Welcome to the team @Feggah !!