Describe the bug
A clear and concise description of what the bug is.

In swarms.structs.agent.py:
Agent Class, class member "all_gpus" is not declare in init,

which leads to member function un() error. due to this following line of code
all_gpus = all_gpus or self.all_gpus

To Reproduce
Steps to reproduce the behavior:

in example.py:

user has to add following extra line of code to make program work:
agent.all_gpus = False

result = agent.run(
"How can I establish a ROTH IRA to buy stocks and get a tax break? What are the criteria. Create a report on this question.",
all_cores=True,
)

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
Add any other context about the problem here.