Add snapcraft to repos (#73)

👋 Hello! I'm new here!

It was [suggested](https://codeberg.org/forgejo/forgejo/issues/2542#issuecomment-1734187) to add the [unofficial snap](https://snapcraft.io/forgejo) to this deligfhtful list!

I also tried adding the repology-style badge under the repology image on the right (because repology [refuse](https://github.com/repology/repology-updater/issues/627#issuecomment-394407322) to add snapcraft). However, the badge doesn't line up, and with my limited HTML skills I just made the whole page look terrible.

So I just added the badge within the snapcraft entry. I appreciate that's inconsistent with the others in the list. Sorry about that, but I felt it was the least-worst way to add the badge to the page. Feedback welcome though. Also, if any "HTML in Markdown" ninjas can make it look better over under the repology image, that'd be neat 🤷

Thanks!

Signed-off-by: Alan Pope <popey@noreply.codeberg.org>

Reviewed-on: https://codeberg.org/forgejo-contrib/delightful-forgejo/pulls/73
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Alan Pope <popey@noreply.codeberg.org>
Co-committed-by: Alan Pope <popey@noreply.codeberg.org>

README.md

@@ -95,6 +95,8 @@ Also see [forgejo package versions on Repology](https://repology.org/project/for
 - **NixOS**
 	- [NixOS master](https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/version-management/forgejo)
 	- [NixOS unstable](https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/applications/version-management/forgejo/default.nix)
+- **Snapcraft** [![forgejo](https://snapcraft.io/forgejo/badge.svg)](https://snapcraft.io/forgejo)
+	- [unofficial `forgejo` snap package](https://codeberg.org/forgejo-contrib/snap) - currently building in [launchpad](https://launchpad.net/~popey/forgejo-snap/+snap/forgejo-snap)
 - **Termux (Android)**
     - [`forgejo` package](https://github.com/termux/termux-packages/tree/master/packages/forgejo)
 - **Void Linux**