Fix:signal.SIGUSR1 and signal.SIGUSR2 can't use in window. so don't bind signal.SIGUSR1 and signal.SIGUSR2 in the windows env (#5941)

### What problem does this PR solve?
Fix:signal.SIGUSR1 and signal.SIGUSR2 can't use in window. so don't bind
signal.SIGUSR1 and signal.SIGUSR2 in the windows env

### Type of change

- [✓ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

Co-authored-by: tangyu <1@1.com>

rag/svr/task_executor.py

 from multiprocessing.context import TimeoutError
 from timeit import default_timer as timer
 import tracemalloc
-import resource
 import signal
 import trio
 import exceptiongroup
     snapshot = tracemalloc.take_snapshot()
     snapshot.dump(snapshot_file)
     current, peak = tracemalloc.get_traced_memory()
-    max_rss = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss
+    if sys.platform == "win32":
+        import  psutil
+        process = psutil.Process()
+        max_rss = process.memory_info().rss / 1024
+    else:
+        import resource
+        max_rss = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss
     logging.info(f"taken snapshot {snapshot_file}. max RSS={max_rss / 1000:.2f} MB, current memory usage: {current / 10**6:.2f} MB, Peak memory usage: {peak / 10**6:.2f} MB")
 
 # SIGUSR2 handler: stop tracemalloc
     logging.info(f'TaskExecutor: RAGFlow version: {get_ragflow_version()}')
     settings.init_settings()
     print_rag_settings()
-    signal.signal(signal.SIGUSR1, start_tracemalloc_and_snapshot)
-    signal.signal(signal.SIGUSR2, stop_tracemalloc)
+    if sys.platform != "win32":
+        signal.signal(signal.SIGUSR1, start_tracemalloc_and_snapshot)
+        signal.signal(signal.SIGUSR2, stop_tracemalloc)
     TRACE_MALLOC_ENABLED = int(os.environ.get('TRACE_MALLOC_ENABLED', "0"))
     if TRACE_MALLOC_ENABLED:
         start_tracemalloc_and_snapshot(None, None)