add partial eval platform

[jackaldenryan]

Structure of this is as follows:

• The snippetization notebook is for loading the longmemeval data set and doing a one time reformatting of the LME data set into "snippets". This notebook saves all of this data, which is very large, into a newly created folder, which is git-ignored
• The mini-dataset creation notebook is for filtering and formatting some specific "mini-dataset" which might be for instance 10 snippets. This notebook is also responsible for calling the utility function for ingesting and labeling, since part of the mini data set itself includes GPT-4o labels. The mini-dataset will have two forms: the internal eval CSV, used for the actual CLI test, and then the CSV used for human labeling, which will ultimately be imported into a Google sheet
• The eval_extract_nodes file is for the CLI test. It is currently outdated and will eventually be updated to use the same ingestion and labeling utility function.

[github-actions]

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