Add redshirt to flake

flake.nix

@@ -24,6 +24,15 @@
             ./hosts/chapel/configuration.nix
           ];
         };
+        redshirt = nixpkgs.lib.nixosSystem {
+          system = "x86_64-linux";
+          specialArgs = {
+            inherit inputs;
+          };
+          modules = [
+            ./hosts/chapel/configuration.nix
+          ];
+        };
       };
     };
 }