feat: add markdown report generation support

Author: chinmaychandra1

nettacker/nettacker/core/markdown_report.py

@@ -0,0 +1,17 @@
+def generate_markdown_report(results, output_file="output.md"):
+    """
+    Generate a simple markdown report from scan results.
+    """
+    try:
+        with open(output_file, "w", encoding="utf-8") as f:
+            f.write("# Nettacker Scan Report\n\n")
+
+            if not results:
+                f.write("No results found.\n")
+                return
+
+            for item in results:
+                f.write(f"- {str(item)}\n")
+
+    except Exception as e:
+        print(f"Error generating markdown report: {e}")