tree-wide: format with nixfmt

Another saturday another useless formatter change.
It's my dotfiles, after all

alejandra doesn't handle c-style inline comments well.

nix/homeModules/common/lazygit.nix

@@ -2,9 +2,11 @@
   config,
   lib,
   ...
-}: let
+}:
+let
   cfg = config.programs.lazygit;
-in {
+in
+{
   programs.tmux.extraConfig = lib.mkIf cfg.enable ''
     bind g run-shell "tmux new-window ${lib.getExe cfg.package}"
   '';