Add git config and several pkgs

I've added the config to symlink my dotfiles .git like I used to do with
stow.

home-manager/common.nix

@@ -184,17 +184,10 @@
 
   fonts.fontconfig.enable = true;
 
-  xdg.configFile = let 
-	  dotfiles = "${config.home.homeDirectory}/git/dotfiles";
-
-	  createDotlink = name: {
-		  source = config.lib.file.mkOutOfStoreSymlink "${dotfiles}/${name}/.config/${name}";
+  xdg.configFile = {
+    "git" = {
+      source = config.lib.file.mkOutOfStoreSymlink "${config.home.homeDirectory}/git/dotfiles/git/.config/git";
       recursive = true;
     };
-
-  in {
-    "git" = createDotLink "git";
-    "niri" = createDotLink "niri";
-    "jj" = createDotLink "jj";
   };
 }

home-manager/personal.nix

@@ -1,4 +1,13 @@
 { config, pkgs, ... }:
 {
   home.packages = with pkgs; [ ];
+  programs.git = {
+      enable = true;
+      userName = "J. Fernando Sánchez";
+      userEmail = "balkian@gmail.com";
+      extraConfig = {
+              init.defaultBranch = "main";
+      };
+  };
+
 }

jj/.config/jj/config.toml

@@ -15,3 +15,4 @@ diff-formatter=":git"
 
 [merge-tools.delta]
 diff-args=["--side-by-side", "$left", "$right", "--width=$width"]
+