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.

modules/homebrew.nix

@@ -0,0 +1,40 @@
+{ config, lib, pkgs, ... }:
+
+{
+  homebrew = {
+		enable = true;
+
+		onActivation.autoUpdate = true;
+		onActivation.upgrade = true;
+		#onActivation.cleanup = "zap";
+
+		casks = [ 
+			"arc"
+			"bettermouse"
+			"blender"
+			"citrix-workspace"
+			"cryptomator"
+			"Discord" 
+			"Element" 
+			"ghostty"
+			"IINA"
+			"Keka" 
+			"meta"
+			"mullvad-vpn"
+			"obs"
+			"Obsidian" 
+			"orion"
+			"Secretive" 
+			"tailscale-app"
+			"telegram"
+			"UTM"
+			"vscodium" 
+		];
+
+		masApps = {
+			"Bitwarden" = 1352778147;
+			"DropOver" = 1355679052;
+			"Yubico Authenticator" = 1497506650;
+		};
+	};
+}