feat: support ESLint 8.x

[MichaelDeBoey]

ESLint v8.0.0 is released 🎉

devDependency compatibility with ESLint 8:

• [ ] @mysticatea/eslint-plugin (https://github.com/mysticatea/eslint-plugin/issues/31)
  • [ ] https://github.com/mysticatea/eslint-plugin/pull/29
  • [ ] https://github.com/mysticatea/eslint-plugin/pull/32
  • [ ] Release
• [x] @typescript-eslint/parser (https://github.com/typescript-eslint/typescript-eslint/issues/3738)
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3737
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3767
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3768
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3800
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3806
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3808
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3809
  • [x] v5.0.0
• [ ] eslint4b (https://github.com/mysticatea/eslint4b/issues/13)
  • [ ] https://github.com/mysticatea/eslint4b/pull/14
  • [ ] Release

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BREAKING CHANGE: Requires Node@^10.0.0 || ^12.0.0 || >=14.0.0

Closes #75