team-list: establish categorization team

Per RFC 146:
https://github.com/NixOS/rfcs/blob/master/rfcs/0146-meta-categories.md#categorization-team

> "a team entrusted with authority to manage issues related to categorization and carry their corresponding duties"

maintainers/team-list.nix

@@ -134,6 +134,24 @@ with lib.maintainers;
     shortName = "c3d2";
   };
 
+  categorization = {
+    members = [
+      aleksana
+      fgaz
+      getpsyched
+      lyndeno
+      natsukium
+      philiptaron
+      pyrotelekinetic
+      raskin
+      sigmasquadron
+      tomodachi94
+    ];
+    githubTeams = [ "categorization" ];
+    scope = "Maintain the categorization system in Nixpkgs, per RFC 146. This team has authority over all categorization issues in Nixpkgs.";
+    shortName = "Categorization";
+  };
+
   cinnamon = {
     members = [
       bobby285271