feat: easy job replication from W&B job url

[akoumpa]

The automodel CLI enables users to run jobs interactively or in batch mode (e.g., on SLURM or k8s) based on the contents of a YAML config. The Wandb is often used to log metrics (such as loss and gradient_norm), but also the config that was used to launch a job.

This PR introduces two more commands to the automodel CLI:

• replicate
• resume

By running automodel replicate <wandb_job_url> the same job is launched again on the user's hardware. This is a great feature for collaboration, but also for debugging, since with the help of uv/docker we can get the exact same environment.

And finally, the automodel resume <wandb_job_url> allows users to resume a previous run job -- assuming that the checkpoints for the job are still accessible.

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