[Feature] When unlocking Interstellar, show a graphic that can be shared

[carlssonemil]

When the users unlock the Interstellar camouflage (or the Borealis camouflage), show a graphic in the popup that can be shared to social media.

From Discord: https://discord.com/channels/1039272576402337863/1172217947872301096/1172677806958841967