feat: initialize repo with NixOS and Home Manager configs

- Add .gitignore for common languages, tools, and OS/editor artifacts
- Configure .gitattributes for Git LFS (fonts, images, archives, ISOs)
- Add README with repo description
- Add flake.nix defining inputs and outputs for NixOS, Home Manager, and related modules
- Introduce home-manager configs:
  - Base home.nix with packages, services, and programs
  - Hyprland WM configuration (waybar, fuzzel, keybindings, theming)
  - Vim (nixvim) setup with LSP and plugins
  - Zsh setup with aliases, Oh My Zsh, clipboard helpers
  - Systemd user services (e.g., librespot)
- Add scripts (GPU monitor, RAM build helper, install automation)
- Add host configurations:
  - Nixbook (Apple laptop) with hardware, disko, and install script
  - Nixstation (desktop) with firewall, virtualization, Btrfs scrub timer
  - Nixtest (test VM) with QEMU + Alpine-based install test harness
  - Common modules (network, NVIDIA, rclone, screen, keychron, users)
- Include statix config for linting

hosts/common/nvidia/default.nix

@@ -0,0 +1,54 @@
+{ config
+, pkgs
+, unstable
+, ...
+}:
+{
+  imports = [
+    #  ./passthrough.nix
+  ];
+
+  hardware = {
+    graphics = {
+      enable = true;
+      enable32Bit = true;
+    };
+    nvidia-container-toolkit = {
+      enable = true;
+      suppressNvidiaDriverAssertion = true;
+    };
+    nvidia = {
+      modesetting.enable = true;
+      powerManagement.enable = false;
+      powerManagement.finegrained = false;
+      open = false; # keep it like that for now, unstable!!
+      nvidiaSettings = true;
+      package = unstable.linuxPackages.nvidiaPackages.latest;
+    };
+  };
+
+  services = {
+    sunshine = {
+      enable = false;
+      # autoStart = true;
+      # openFirewall = true;
+      package = pkgs.sunshine.overrideAttrs (old: {
+        cmakeFlags = (old.cmakeFlags or [ ]) ++ [
+          "-DSUNSHINE_ENABLE_CUDA=OFF"
+          "-DCUDA_FAIL_ON_MISSING=OFF"
+        ];
+      });
+    };
+  };
+  nixpkgs.config.cudaSupport = true;
+  environment.systemPackages = with pkgs; [
+    mesa
+    glxinfo
+    libepoxy
+    libglvnd
+    nvidia-container-toolkit
+    cudaPackages.cudatoolkit
+    cudaPackages.cuda_nvcc
+  ];
+
+}