Fix asyncio event loop initialization on Windows

[uceka]

Summary

This PR fixes a runtime error when running ScoutSuite on Windows with recent Python versions (e.g. 3.12), where asyncio.get_event_loop() raises:

RuntimeError: There is no current event loop in thread 'MainThread'.

The issue occurs in ScoutSuite/__main__.py in the run function, which currently assumes that asyncio.get_event_loop() will always return an event loop on the main thread.

Root cause

On Windows with newer Python versions, asyncio.get_event_loop() may raise a RuntimeError if no event loop has been set for the current thread yet, or if the previously used loop has been closed. In that situation, the current code path fails before the async workflow can even start.

Fix

This change makes the event loop initialization more robust by:

• Wrapping the asyncio.get_event_loop() call in a try/except block.
• Treating a closed loop as an error condition.
• Creating a new event loop and registering it with asyncio.set_event_loop() when needed.

Updated snippet in run:

    # Ensure there's a running event loop (Python 3.10+ / Windows compatibility)
    try:
        loop = asyncio.get_event_loop()
        if loop.is_closed():
            raise RuntimeError("Event loop is closed")
    except RuntimeError:
        loop = asyncio.new_event_loop()
        asyncio.set_event_loop(loop)

    # Set the throttler within the loop so it's accessible later on
    loop.throttler = Throttler(rate_limit=max_rate if max_rate else 999999, period=1)

This approach keeps the existing structure (using a single loop and run_until_complete) but avoids the crash when no loop is present yet.

Testing

Environment:

• OS: Windows (as a target runtime; change authored from macOS)
• Python: 3.12.x

Steps performed:

1. Ran python scout.py azure -c before the change on Windows and observed:
   • RuntimeError: There is no current event loop in thread 'MainThread'.
2. Applied this patch.
3. Re-ran python scout.py azure -c and confirmed that the event loop error no longer occurs.

No other functional behavior changes are intended by this PR.