added some git configuration and a notification if git isnt setup

modules/scripts/gitnotify.nix

@@ -0,0 +1,24 @@
+{ writeShellApplication, git, libnotify, ... }:
+
+writeShellApplication {
+	name = "custom-gitnotify";
+	runtimeInputs = [
+      git
+      libnotify
+	];
+	text = ''
+# Check if git is installed
+if ! command -v git >/dev/null 2>&1; then
+    exit 0
+fi
+
+NAME=$(git config --global user.name)
+EMAIL=$(git config --global user.email)
+
+if [[ -z "$NAME" || -z "$EMAIL" ]]; then
+    notify-send \
+        "Git not configured" \
+        "Set your identity\n or remove this warning by removing the custom-gitnotify line in\n ~/nixos/modules/home-manager/hyprland.nix"
+fi
+    '';
+}