releases: improve automated releases and review

[dutterbutter]

Description

We want to update the release pipeline flow so releases can properly be reviewed and triggered by the maintaining team while also automating the cargo toml bump. This flow will do the following:

Proposed Workflow

1. Automated Release PRs:

   • Automatically generate and update a "Release PR" for every merge to the main branch.
   • This ensures visibility of upcoming changes, enabling the team to review and manage the release process effectively.
   • Ensure cargo.toml reflects upcoming release tag
   • Clearly outlines breaking changes

2. Release Manager Review:

   • The releases will be approved and merge the "Release PR" once all checks are complete and the release is ready.

3. Versioned and Tagged Releases:

   • A new release (e.g., v0.2.2) will be created upon merging the Release PR.
   • The release will include relevant changelogs and release notes and will be tagged as "latest."