Add formatting team (#1337)

As [established by RFC
166](https:/NixOS/rfcs/blob/master/rfcs/0166-nix-formatting.md#nix-formatter-team),
see also NixOS/nixfmt#153.

Before merging I'd like all members to give their okay with their entry.
Ping @NixOS/nix-formatting

---------

Co-authored-by: Sereja313 <[email protected]>

src/content/teams/12_formatting.mdx

@@ -0,0 +1,30 @@
+---
+name: Nix Formatting Team
+description: Maintains the official Nix formatter and standard format.
+members:
+- name: Silvan Mosberger
+ github: infinisil
+ title: Administrative leader, sponsored by Tweag and Antithesis
+- name: piegames
+ github: piegamesde
+ title: Main developer
+- name: Thomas Bereknyei
+ github: tomberek
+ title: Supporting developer, sponsored by Flox
+- name: "0x4A6F"
+ github: "0x4A6F"
+ title:
+- name: Sergey Gulin
+ github: Sereja313
+ title: Sponsored by Serokell
+- name: Janne Heß
+ github: dasJ
+ title:
+contact:
+- name: Team page
+ href: https:/NixOS/nixfmt/tree/master/team
+---
+
+The Nix formatting team was established by [RFC 166](https:/NixOS/rfcs/pull/166) and is in charge of:
+- Maintaining the [official Nix formatter](https:/NixOS/nixfmt)
+- Applying the official Nix formatter to [Nixpkgs](https:/nixos/nixpkgs/)

src/pages/community/teams/[...slug].astro

@@ -35,6 +35,11 @@ const { Content } = await entry.render();
  (<a href={"https://discourse.nixos.org/u/" + member.discourse}>@{member.discourse}</a>)
  </>
  )}
+ {member.github && (
+ <>
+ (<a href={"https:/" + member.github}>@{member.github}</a>)
+ </>
+ )}
  {member.title && (
  <>
  &mdash;