feat(home-manager): service defs and fmt

fmt: reformatted using nixpkgs-fmt prettifier
mpd: created configuration
hypr: add window rules
commons: add usingMusicPlayerDaemon variable

home-manager/stvnliu/scripts/tmux-default.script.nix

@@ -1,18 +1,19 @@
-{
-  pkgs,
-  config,
-}: let
+{ pkgs
+, config
+,
+}:
+let
   tmux = config.programs.tmux.package;
   windowName = "code-mode";
 in
-  pkgs.writeShellScriptBin "tmux-code" ''
-    #!${pkgs.bash}/bin/bash
-    ${tmux}/bin/tmux has-session -t ${windowName} 2>/dev/null
-    if [ $? != 0 ]; then
-      # setting up session
-      ${tmux}/bin/tmux new -s ${windowName} -d
-      ${tmux}/bin/tmux send-keys -t ${windowName} 'nvim' Enter
-      ${tmux}/bin/tmux split-window -h
-    fi
-    ${tmux}/bin/tmux attach -t ${windowName}
-  ''
+pkgs.writeShellScriptBin "tmux-code" ''
+  #!${pkgs.bash}/bin/bash
+  ${tmux}/bin/tmux has-session -t ${windowName} 2>/dev/null
+  if [ $? != 0 ]; then
+    # setting up session
+    ${tmux}/bin/tmux new -s ${windowName} -d
+    ${tmux}/bin/tmux send-keys -t ${windowName} 'nvim' Enter
+    ${tmux}/bin/tmux split-window -h
+  fi
+  ${tmux}/bin/tmux attach -t ${windowName}
+''