[WIP] feat: Add generic Wandb integration

[cnbeining]

WIP but with high confidence.

Tests welcomed for non-LoRA training as I don't have powerful GPU :-(

Usage:

from pytorch_lightning.loggers import WandbLogger  # Or any other logger supported by pytorch_lightning

# Initializes WandB integration 
wandb_logger = WandbLogger()

dataset = Dataset("whatever")
model = BaseModel.create("whatever")

model.finetune(dataset=dataset, logger=wandb_logger)