added extensions

app.py

@@ -117,7 +117,8 @@ def main():
         )
         uploaded_file = st.file_uploader(
             "Upload File (optional)",
-            type=['txt', 'py', 'md', 'csv']
+               type=['txt', 'py', 'md', 'swift', 'java', 'js', 'ts', 'rb', 'go', 
+                'php', 'c', 'cpp', 'h', 'hpp', 'cs', 'html', 'css', 'kt']
         )
 
     # Display chat messages