Fixing a circular import issue

Author: jkugler

cyclonedx/model/__init__.py

@@ -50,7 +50,6 @@
     SchemaVersion1Dot5,
     SchemaVersion1Dot6,
 )
-from .tool import Tool
 
 @serializable.serializable_enum
 class DataFlow(str, Enum):
@@ -1196,6 +1195,8 @@ def __hash__(self) -> int:
     def __repr__(self) -> str:
         return f'<Copyright text={self.text}>'
 
+# Importing here to avoid a circular import
+from .tool import Tool  # pylint: disable=wrong-import-position
 ThisTool = Tool(
     vendor='CycloneDX',
     name='cyclonedx-python-lib',