Cleanup, added more radio items, tweaks to displaylink

modules/application-groups/radio.nix

@@ -0,0 +1,11 @@
+{ config, pkgs, ... }:
+{
+  hardware.rtl-sdr.enable = true;
+
+  environment.systemPackages = with pkgs; [
+    chirp
+    soapysdr
+    soapyrtlsdr
+  ];
+
+}