Icon request: Objective C

[kaangokdemir]

Great project. It would be great to see Objective C .svg and icon also.

link: https://assets.exercism.io/tracks/objective-c-bordered-turquoise.png

[thenick775]

Bumped because I'd also appreciate this

[tupaschoal]

This was added by #425 and already appears on https://devicon.dev/, so it can likely be closed

[amacado]

Thanks for the hint @tupaschoal!