proposal: stabilize std/collections

[iuioiua]

Package documentation: https://jsr.io/@std/collections/doc

Progress:

• 100% documented, passing deno doc --lint checks and adhering to the documentation guidelines.
• Maximum possible test coverage
• No open issues or pull requests that might lead to breaking changes. For example, issues that suggest new non-breaking features are fine to exist at stabilization.
• Publish 1.0.0-rc.1
• Wait 1 month for feedback
• Publish 1.0.0

Blockers:

• docs(collections): complete documentation #4664
• very strongly typed collections/ functions #3384
• Allow Zip and Unzip to work on more than two arrays #1203 (update: likely not a blocker)
• collections: most functions that work on Record do not work with interface #1126