Add requires_capture_bus attribute to BaseModule and passive modules

- BaseModule now has requires_capture_bus = False default
- All 17 passive modules set requires_capture_bus = True
- bigbrother.py imports CaptureBus from core.capture_bus
- Ready for Engine to instantiate and inject CaptureBus

modules/passive/dns_logger.py

@@ -363,6 +363,7 @@ class DNSLogger(BaseModule):
             except Exception:
                 parts.append("?")
             offset += length
+    requires_capture_bus = True
 
         name = ".".join(parts) if parts else ""
         return (name, saved_offset if jumped else offset)