aider: Added a basic abstract class for a node in git.py.

# Context:
USER: in git.py add a basic abstract class for a node

git.py

@@ -1,17 +1,8 @@
-"""
-This module provides functions for interacting with Git.
+import os
 
-Author: Your Name
-"""
+class Node:
+    def __init__(self):
+        pass
 
-import subprocess
-
-def check_git_status():
-    try:
-        output = subprocess.check_output(['git', 'status'])
-        print(output.decode('utf-8'))
-    except subprocess.CalledProcessError as e:
-        print(f"Error: {e}")
-
-if __name__ == "__main__":
-    check_git_status()
+    def process(self):
+        raise NotImplementedError("Subclasses must implement the process method")