Add Changelog package

[bauchdj]

Are there any plans to add changesets or another changelog tool?

Setting up a changelog to track changes is extremely helpful and requires enough setup that I think it would be helpful to include it as an option.

[coderabbitai]

A summary of the changes CodeRabbit can apply:

• Add a new changelog management guide (apps/web/content/docs/guides/changelog-management.mdx), add explanatory comments in apps/cli/src/prompts/addons.ts about the design decision to avoid Changesets, and update apps/cli/README.md with a "Changelog Management" section recommending automated conventional-commit tooling (e.g., changelogithub) while documenting how to opt into Changesets if desired.

• Add documentation and guidance for automated changelog generation by inserting a "Changelog Management" section into apps/cli/README.md, add explanatory comments in apps/cli/src/prompts/addons.ts noting changelog tools are intentionally omitted in favor of automated changelogithub, and add a new docs page apps/web/content/docs/guides/changelog-management.mdx that explains using changelogithub, shows setup steps, conventional commits guidance, alternatives, and best practices.

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