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/lenny.nix

@@ -4,15 +4,12 @@
   	jujutsu
 	ansible
 	awscli2
-	tinybird
+	cargo-cross
+	rustup
+	rustc
+	gcc
+	vial
+	chromium
   ];
-  programs.git = {
-      enable = true;
-      userName = "Fernando Sánchez";
-      userEmail = "f.sanchez@thechannelstore.tv";
-      extraConfig = {
-              init.defaultBranch = "main";
-      };
-  };
 
 }