refactor: organize hosts configs into dedicated directory

- Move and rename host-specific configurations (e.g., wsl to hosts/wsl)
- Add home.nix files for mbp and wsl, importing common modules
- Update mbp flake.nix path to new hosts/mbp/configuration.nix
- Integrate home-manager for user environments on macOS/WSL
- Update flake.lock inputs (nixpkgs, home-manager, homebrew) for latest versions
- Add README.md with project overview and setup instructions

This restructures the repo for multi-host support, improves modularity, and ensures reproducible builds with updated dependencies.

hosts/wsl/configuration.nix

@@ -0,0 +1,29 @@
+# Edit this configuration file to define what should be installed on
+# your system. Help is available in the configuration.nix(5) man page, on
+# https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
+
+# NixOS-WSL specific options are documented on the NixOS-WSL repository:
+# https://github.com/nix-community/NixOS-WSL
+
+{ config, lib, pkgs, ... }:
+
+{
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+  wsl.defaultUser = "duumxh";
+  wsl.interop.register = true;
+
+  programs.zsh.enable = true;
+
+  users.users.duumxh = {
+  	isNormalUser = true;
+  	shell = pkgs.zsh;
+  };
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It's perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "25.05"; # Did you read the comment?
+}

hosts/wsl/home.nix

@@ -0,0 +1,21 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+
+{
+  imports = [
+    ../../modules/common.nix
+    ../../modules/programs/bat.nix
+    ../../modules/programs/eza.nix
+    ../../modules/programs/fzf.nix
+    ../../modules/programs/git.nix
+    ../../modules/programs/k9s.nix
+    ../../modules/programs/micro.nix
+    ../../modules/programs/ssh.nix
+    ../../modules/programs/zoxide.nix
+    ../../modules/programs/zsh.nix
+  ];
+}