extract bridge to module-based services

modules/bridge/primary.nix

@@ -0,0 +1,22 @@
+{
+  liminix
+, lib
+}:
+let
+  inherit (liminix.networking) interface;
+  inherit (liminix.lib) typeChecked;
+  inherit (lib) mkOption types;
+  t = {
+    ifname = mkOption {
+      type = types.str;
+      description = "interface name for the bridge device";
+    };
+  };
+in
+params:
+let
+  inherit (typeChecked "bridge" t params) ifname;
+in interface {
+  device = ifname;
+  type = "bridge";
+}