feat: add justyna-p300, dcpj4110dw driver, nixos-anywhere compatibility

nix/os/devices/justyna-p300/hw.nix

@@ -0,0 +1,48 @@
+{
+  repoFlake,
+  nodeFlake,
+  lib,
+  ...
+}: {
+  imports = [
+    nodeFlake.inputs.disko.nixosModules.disko
+  ];
+
+  disko.devices.disk.sda = {
+    device = "/dev/sda";
+    type = "disk";
+    content = {
+      type = "table";
+      format = "gpt";
+      partitions = [
+        {
+          name = "boot";
+          start = "0";
+          end = "1M";
+          part-type = "primary";
+          flags = ["bios_grub"];
+        }
+        {
+          name = "root";
+          start = "1M";
+          end = "100%";
+          part-type = "primary";
+          bootable = true;
+          content = {
+            type = "btrfs";
+            extraArgs = ["-f"]; # Override existing partition
+            subvolumes = {
+              # Subvolume name is different from mountpoint
+              "/rootfs" = {
+                mountpoint = "/";
+              };
+              "/nix" = {
+                mountOptions = ["noatime"];
+              };
+            };
+          };
+        }
+      ];
+    };
+  };
+}