Devtools: Reorganize submodules to be more ... modular

modules/hosts/tux/devtools.nix

@@ -3,6 +3,11 @@
     imports = with inputs.self.modules.nixos;
       with inputs.self.factory; [
         development-tools
+        rust-dev
+
+        udev
+        udev-pio
+
         docker
       ];
   };

modules/programs/development-tools/rust.nix

@@ -6,7 +6,7 @@
     };
   };
 
-  flake.modules.nixos.development-tools = { pkgs, ... }: {
+  flake.modules.nixos.rust-dev = { pkgs, ... }: {
     nixpkgs.overlays = [
       inputs.rust-overlay.overlays.default
     ];

modules/programs/development-tools/udev/platformio.nix

@@ -1,5 +1,5 @@
 {
-  flake.modules.nixos.development-tools = { pkgs, ... }: {
+  flake.modules.nixos.udev-pio = { pkgs, ... }: {
     services.udev.packages = with pkgs; [ platformio-core.udev ];
   };
 }

modules/programs/development-tools/udev/udev.nix

@@ -0,0 +1,5 @@
+{
+  flake.modules.nixos.udev = {
+    services.udev.enable = true;
+  };
+}