Request: Add GitHub Copilot icon

[mawkler]

GitHub Copilot was announced last year and now it's also available for Neovim: copilot.vim. In VSCode there's an icon in the bottom right to indicate whether it is enabled for the current filetype, which I think would be very neat to be able to add to Neovim's statusline as well, for instance.

I think this is what the glyph that VSCode uses looks like:

[twiddli]

Octoicons seems to have this available now. Not sure from what version: https://primer.style/design/foundations/icons/copilot-96
Would be nice to have these fonts updated as well.

[twiddli]

I found this: 