hydra: add "type" key to jobsets

hydra/hydra.json

 {
     "enabled": 1,
+    "type": 0,
     "hidden": true,
     "description": "Jobsets",
     "nixexprinput": "rust-card10",

hydra/hydra.nix

@@ -3,6 +3,7 @@ let
   jobsets = {
     c-firmware = {
       enabled = 1;
+      type = 0;
       hidden = false;
       description = "card10 C firmware";
       nixexprinput = "rust-card10";
@@ -20,6 +21,7 @@ let
     };
     rust-l0dables = {
       enabled = 1;
+      type = 0;
       hidden = false;
       description = "card10 Rust l0dable examples";
       nixexprinput = "rust-card10";
@@ -38,6 +40,7 @@ let
     };
     firmware-combined = {
       enabled = 1;
+      type = 0;
       hidden = false;
       description = "Prepared firmware with Rust l0dables";
       nixexprinput = "rust-card10";