feat: drop projects-classic endpoints, add GitHub API endpoints: cache limits (retention & storage) for repos/orgs/enterprises, billing budgets & usage, artifacts deployment metadata, and projectsV2 drafts & fields

[octokit]

Make sure to update the commits so that the merge results in helpful release notes, see Merging the Pull Request & releasing a new version.

In general

• Avoid breaking changes at all costs
• If there are no typescript changes, use build: cache as commit message
• If there are there are only updates, use fix: ...
• If there are any new additions, use feat: ...
• If there are breaking changes, keep the previous ones and deprecate them. Only if there is no other way, add BREAKING CHANGE: ... to the commit body (not subject!) to trigger a breaking change.

[octokit]

👋 Hi! Thank you for this contribution! Just to let you know, our GitHub SDK team does a round of issue and PR reviews twice a week, every Monday and Friday! We have a process in place for prioritizing and responding to your input. Because you are a part of this community please feel free to comment, add to, or pick up any issues/PRs that are labeled with Status: Up for grabs. You & others like you are the reason all of this works! So thank you & happy coding! 🚀