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/users/thiago/default.nix

@@ -0,0 +1,38 @@
+{ pkgs, config, ... }:
+let
+  ifTheyExist = groups: builtins.filter (group: builtins.hasAttr group config.users.groups) groups;
+in
+{
+  users.users.thiago = {
+
+    isNormalUser = true;
+    initialPassword = "changeme";
+    extraGroups =
+      [
+        "networkmanager"
+        "wheel"
+        "scard"
+      ]
+      ++ ifTheyExist [
+        "wireshark"
+        "i2c"
+        "docker"
+        "git"
+        "libvirtd"
+        "libvirt"
+        "video"
+        "kvm"
+        "scanner"
+        "photos"
+      ];
+    openssh.authorizedKeys.keyFiles = [
+      (builtins.fetchurl {
+        url = "https://github.com/sposito.keys";
+        sha256 = "0bwqj8si0q6kp9cdjgkp9kfz17f24wf476zqzvxbygn6f4av0wh2";
+      })
+    ];
+
+    packages = [ pkgs.home-manager ];
+  };
+
+}