Add workflows to automate updating and releases

[Multirious]

Objective

Reduce the chore in to Bevy migration and making releases.

Solution

Add workflows:

• make_bevy_migration.yml
• make_release.yml
• publish_release.yml

Using these should allows us to make migration and release without having to access the code base for the most part. They modifies CHANGELOG.md, README.md and Cargo.toml automatically. Although may be a bit hacky because these use bunch of sed commands, but if any issues were to arise, the CI and reviewing should catch it.

Testing

Testing was done in a separate testing repository.

To-Do Checklist

• Write CHANGELOG.md