GitLab

- saves the doc idx by order in dataset
- saves the full ctx. we can turn this off it is too much memory
- saves the idx of the fewshot examples
- saves the source (test/val) of the fewshot examples
- TODO: We now need to return the pred/target from process_results
- TODO: Make it so override-ed process-resutls don't have to re-impl
this.

Add `ROUGE` metric to `PromptSourceTask`

Updated the requests so that its easier to understand.

Updated doc: If the answer choices is empty, then it is generation; else ranked choice. This will be the canonical approach when using PS.

Add optional max length to generation.

Turned off generation tasks for now. Changed process to look at the metrics. Only accuracy implemented.