Formal report detailing transfer results

[isaacmg]

Using the results of #43 we need a formal report examining transfers.
Acceptance criteria

• Write a formal report on Weights and Biases to examine effect of transfer

[isaacmg]

This is mostly done just have a few labels to correct on the bar charts.

[isaacmg]

Even though the report isn't entirely exhaustive I'm going to mark it as complete for now. It give us a good general idea of which setups seem to work better. We will continue to test all configurations on target counties.
https://app.wandb.ai/covid/covid_forecast/reports/Transferring-Knowledge-on-Time-Series-with-the-Transformer--VmlldzoxNDEzOTk