Miners improvements

[p-ferreira]

• drops magic property to prevent auto instrumentation of config in wandb
• adds fix for zephyr wandb integration bug
• adds --neuron.stop_on_forward_exception
• creates init_wandb with run_name configuration
• sets default openai miner to gpt3.5 turbo
• adds strict requirement to langchain on openai
• updates wiki agent base model to a more cheap and reliable model (we need big context windows for ReAct)
• adds identity tags to zephyr
• adds missing wikipedia dependency
• adds extra openai params