feat: support ESLint 7.x

[MichaelDeBoey]

Re-submission of mysticatea#29

ESLint v7.0.0 is released 🎉

Dependencies should be compatible with ESLint 7 too before we can merge this one:

• @typescript-eslint/eslint-plugin (ESLint v7 typescript-eslint/typescript-eslint#1550)
  • v3.0.0
• @typescript-eslint/parser (ESLint v7 typescript-eslint/typescript-eslint#1550)
  • v3.0.0
• eslint-plugin-eslint-comments (Support ESLint 7.x mysticatea/eslint-plugin-eslint-comments#38)
  • mysticatea/eslint-plugin-eslint-comments@843f337
  • Release
• eslint-plugin-eslint-plugin (Support ESLint 7.x eslint-plugin-eslint-plugin#94)
  • Upgrade: eslint and other deps eslint-plugin-eslint-plugin#92
  • breaking: drop eslint < 7 & node.js < 10 eslint-plugin-eslint-plugin#95
  • v3.0.0
• eslint-plugin-node (Support ESLint 7.x mysticatea/eslint-plugin-node#223)
  • chore(CI): add tests for ESLint 7 mysticatea/eslint-plugin-node#224
  • Release
• eslint-plugin-prettier (Support ESLint 7.x prettier/eslint-plugin-prettier#292)
  • Add tests for running ESLint 7 prettier/eslint-plugin-prettier#291
  • Release
• eslint-plugin-vue
  • Supports ESLint v7.x vuejs/eslint-plugin-vue#1077
  • v7.0.0

---

Closes mysticatea#28

[ota-meshi]

We should probably merge from the alpha branch into this PR.

[github-actions]

🎉 This PR is included in version 15.1.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[MichaelDeBoey]

@eslint-community/mysticatea-eslint-plugin Adding these as 'error' was a breaking change, no?

We also support v6 with this plugin & people using v6 won't have these rules so ESLint will throw I think 🤔