fea: the event of trace module has additional types that can be supported in objwatch

[aeeeeeep]

The event of trace module can be one of the following:

• line: A new line of code is going to be executed.
• call: A function is about to be called or another code block is entered.
• return: A function or other code block is about to return.
• exception: An exception has occurred.
• c_call: A C function is about to be called.
• c_return: A C function has returned.
• c_exception: A C function has raised an exception.

Current supported:

• line
• call
• return

[aeeeeeep]

see https://github.com/python/cpython/blob/3.11/Lib/bdb.py