maintainers: add dotnet team

doc/languages-frameworks/dotnet.section.md

@@ -210,3 +210,5 @@ buildDotnetGlobalTool {
   };
 }
 ```
+
+When packaging a new .NET application in nixpkgs, you can tag the [`@NixOS/dotnet`](https://github.com/orgs/nixos/teams/dotnet) team for help and code review.

maintainers/team-list.nix

@@ -181,6 +181,19 @@ with lib.maintainers; {
     shortName = "Cosmopolitan";
   };
 
+  dotnet = {
+    members = [
+      ivar
+      mdarocha
+      corngood
+      raphaelr
+      jamiemagee
+      anpin
+    ];
+    scope = "Maintainers of the .NET build tools and packages";
+    shortName = "dotnet";
+  };
+
   deepin = {
     members = [
       rewine