Simplify label configuration

[hipstersmoothie]

Release Notes

Label configuration just got a whole lot simpler 🎉

1. Labels can now only be supplied as an array of label objects.

{
  "labels": [
    { "releaseType": "major", "name": "Version: Major" },
    { "releaseType": "minor", "name": "Version: Minor" },
    { "releaseType": "patch", "name": "Version: Patch" },
  ]
}

2. Instead of using skipReleaseLabels just set the label's type to skip

{
  "labels": [
    { "releaseType": "skip", "name": "NO!" }
  ]
}

3. Overwrite default labels using overwrite

{
  "labels": [
    { "releaseType": "major", "name": "Version: Major", "overwrite": true },
  ]
}

4. Add none releaseType. This will act as a skip-release unless paired with a SEMVER label

{
  "labels": [
    { "releaseType": "none", "name": "documentation" },
  ]
}

5. Changed title to changelogTitle.

{
  "labels": [
    { "changelogTitle": "New Docs Yo!", "name": "documentation" },
  ]
}

Why

closes #541
closes #476

Todo:

• Add tests
• Add docs

Published PR with canary version: 8.0.0-canary.751.9964.0

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (next@575d319). Click here to learn what that means.
The diff coverage is 83.9%.

@@           Coverage Diff           @@
##             next     #751   +/-   ##
=======================================
  Coverage        ?   84.83%           
=======================================
  Files           ?       38           
  Lines           ?     2275           
  Branches        ?      313           
=======================================
  Hits            ?     1930           
  Misses          ?      292           
  Partials        ?       53

Impacted Files	Coverage Δ
packages/cli/src/parse-args.ts	100% <ø> (ø)
packages/core/src/auto.ts	85.27% <100%> (ø)
packages/core/src/release.ts	96.08% <100%> (ø)
plugins/slack/src/index.ts	97.61% <100%> (ø)
packages/core/src/init.ts	20.4% <25%> (ø)
packages/core/src/semver.ts	88.88% <60%> (ø)
packages/core/src/git.ts	90.94% <66.66%> (ø)
packages/core/src/config.ts	91.17% <80.95%> (ø)
packages/core/src/changelog.ts	96.59% <84.61%> (ø)
plugins/released/src/index.ts	92.42% <87.5%> (ø)

---

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[adierkens]

🚀 PR was released in v8.0.0 🚀