Labels expected by workflows are not documented

[jhkennedy]

New repos created in the ASFHyP3 org come with the org default labels, many of which are in addition to what GitHub provides by default, and some of which facilitate the GitHub Actions provided with this cookiecutter.

Namely:

• major Bump the major version number of this project , minor Bump the minor version number of this project , patch Bump the patch version number of this project , and bumpless Changes to documentation, CI/CD pipelines, etc that don't affect the project's version are used as part of the release process
• bumpless Changes to documentation, CI/CD pipelines, etc that don't affect the project's version is used as a way to circumvent the changelog check (don't need to document changes that don't result in a version bump)
• tools-bot PRs and Issues opened by the Tools Bot is used to indicate PRs/issues that were automatically created (i.e., "a bot did this")

However, this cookiecutter can and is used for repositories outside of the ASFHyP3 org, so we should document how to create the required labels when we describe the new repository setup.

Note: Getting all the labels in a new repo may be as simple as:

gh label clone ASFHyP3/hyp3-cookiecutter

https://cli.github.com/manual/gh_label_clone

[jhkennedy]

Also, we will likely need to take the name of the "a bot did this" label as an input parameter because it may or may not make sense to match the cookiecutter.github_username provided; see discussion in this comment:
#102 (comment)

[jtherrmann]

@jhkennedy What's the purpose of the tools-bot label besides human-readable documentation? Does it actually affect our actions in any way?

[jhkennedy]

@jtherrmann nope, it does not affect any of our actions; it's just a visual label to indicate things were done by a bot.

I'm not sure it's all that valuable, really. Flipping through our repos, it seems to only be used for the merge-back PRs. Maybe we should just drop that label entirely

[jtherrmann]

@jhkennedy

Maybe we should just drop that label entirely

That would be my vote. It would simplify #102