Refactor modules

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

user/configs/git.nix

@@ -0,0 +1,22 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.git;
+in
+{
+  options.git = {
+    vars = lib.mkOption {
+      type = lib.types.attrs;
+      description = "Variables for the user";
+    };
+  };
+
+  config = {
+    programs.git = {
+      enable = true;
+      lfs.enable = true;
+      userEmail = cfg.vars.email;
+      userName = cfg.vars.fullName;
+    };
+  };
+}