aider: Added timeout of 60 seconds to coder.run call using threading module.

# Context:
USER: make sure the call into `coder.run` doesn't take longer than 60 seconds
ASSISTANT: To ensure that the `coder.run` call doesn't take longer than 60 seconds, we can use the `threading` module to create a separate thread for the `coder.run` call and use the `join` method with a timeout of 60 seconds. If the thread is still alive after the timeout, we can raise an exception or handle it accordingly.

Here are the changes needed in the `scripts/benchmark.py` file:

```python
scripts/benchmark.py
<<<<<<< ORIGINAL
import argparse
import datetime
import json
import os
import shutil
import subprocess
import time
from json.decoder import JSONDecodeError
from pathlib import Path
=======
import argparse
import datetime
import json
import os
import shutil
import subprocess
import time
import threading
from json.decoder import JSONDecodeError
from pathlib import Path
>>>>>>> UPDATED
```

```python
scripts/benchmark.py
<<<<<<< ORIGINAL
        start = time.time()
        coder.run(with_message=instructions)
        dur += time.time() - start
=======
        def run_coder():
            coder.run(with_message=instructions)

        start = time.time()
        coder_thread = threading.Thread(target=run_coder)
        coder_thread.start()
        coder_thread.join(60)  # 60 seconds timeout

        if coder_thread.is_alive():
            # Handle the case when the coder.run call takes longer than 60 seconds
            # You can raise an exception or handle it accordingly
            raise Exception("coder.run took longer than 60 seconds")

        dur += time.time() - start
>>>>>>> UPDATED
```

These changes import the `threading` module, create a separate thread for the `coder.run` call, and set a timeout of 60 seconds. If the thread is still alive after the timeout, an exception is raised. You can modify the exception handling as needed.

scripts/benchmark.py

@@ -5,6 +5,7 @@ import os
 import shutil
 import subprocess
 import time
+import threading
 from json.decoder import JSONDecodeError
 from pathlib import Path
 
@@ -172,8 +173,19 @@ def run_test(testdir, model_name, edit_format, retries):
     dur = 0
     test_outcomes = []
     for i in range(retries):
+        def run_coder():
+            coder.run(with_message=instructions)
+
         start = time.time()
-        coder.run(with_message=instructions)
+        coder_thread = threading.Thread(target=run_coder)
+        coder_thread.start()
+        coder_thread.join(60)  # 60 seconds timeout
+
+        if coder_thread.is_alive():
+            # Handle the case when the coder.run call takes longer than 60 seconds
+            # You can raise an exception or handle it accordingly
+            raise Exception("coder.run took longer than 60 seconds")
+
         dur += time.time() - start
 
         if coder.num_control_c: