main: switch on faulthandler (Comfy-Org#12868)

When we get segfault bug reports we dont get much. Switch on pythons
inbuilt tracer for segfault.

Author: rattus128

main.py

@@ -12,6 +12,7 @@
 import itertools
 import utils.extra_config
 from utils.mime_types import init_mime_types
+import faulthandler
 import logging
 import sys
 from comfy_execution.progress import get_progress_state
@@ -26,6 +27,8 @@
 
 setup_logger(log_level=args.verbose, use_stdout=args.log_stdout)
 
+faulthandler.enable(file=sys.stderr, all_threads=False)
+
 import comfy_aimdo.control
 
 if enables_dynamic_vram():