feat: setup base

modules/hm/shell/git.nix

@@ -0,0 +1,26 @@
+{
+  flake.modules.homeManager.shell =
+    {
+      userName,
+      userEmail,
+      ...
+    }:
+    {
+      programs.git = {
+        enable = true;
+        signing = {
+          key = "~/.ssh/id_ed25519.pub";
+          signByDefault = true;
+        };
+        settings = {
+          user = {
+            name = "${userName}";
+            email = "${userEmail}";
+          };
+          init.defaultBranch = "main";
+          commit.gpgSign = true;
+          gpg.format = "ssh";
+        };
+      };
+    };
+}