Support local path when migrating from wandb to aim

[chenshen03]

🚀 Feature

User can specify the local wandb directory path when migrating from wandb to aim.

Motivation

When using the command aim convert wandb --entity 'my_team' --project 'test_project' to migrate, the server needs to be able to access the network. However, since some private servers cannot be connected to the Internet, it cannot be executed at this time. In this case, it would be more flexible to be able to migrate without accessing the network but given a local path.

Pitch

aim convert wandb --run $LOCAL_PATH_TO_WANDB_RUN

Alternatives

Additional context