[WIP] Add table for tracking pull requests with tool updates

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Create a table with one row per pull request, and a column for the number of updated tools and another column for the number of added tools. Infer the numbers from the changed files, not from the descriptions or titles of the PRs. Include all PRs from 2018 and before. If pagination is required to fulfill this request, iterate all pages.

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