feat: add chess tools (#11)

Author: badele

nix/home-manager/apps/chess.nix

@@ -0,0 +1,18 @@
+# Graphics
+{ pkgs, ... }: {
+  home.packages = with pkgs; [
+    # Game
+    pychess # Chess game
+
+    # Database
+    chessx # Chess database application
+    scid-vs-pc # Chess database application
+
+    # Engine
+    stockfish # Strong open-source chess engine
+    lc0 # Neural network based chess engine
+
+    # TUI
+    chess-tui
+  ];
+}

users/badele/badxps.nix

@@ -27,6 +27,7 @@ in
     # Apps
     ../../nix/home-manager/apps/bluetooth.nix
     ../../nix/home-manager/apps/cad.nix
+    ../../nix/home-manager/apps/chess.nix
     ../../nix/home-manager/apps/graphics.nix
     ../../nix/home-manager/apps/networking.nix