feat: update tnvim flake input and add ai studio api key

hosts/canopus/default.nix

@@ -30,6 +30,11 @@
       sopsFile = ./secrets.yaml;
       owner = "${username}";
     };
+
+    google_api_key = {
+      sopsFile = ./secrets.yaml;
+      owner = "${username}";
+    };
   };
 
   networking = {