Typescript-eslint v8 - projectService

[AndreaPontrandolfo]

Discussion about potentially removing project: true and implementing projectService: true.
Originated from: #156 (comment)

[lishaduck]

Pros:

• Faster
• Less configuration
• Doesn't need tsconfig.eslint.json
  Cons:
• Doesn't support tsconfig.eslint.json (for, i.e., web projects), or tsconfig.sw.json (for service workers)

[AndreaPontrandolfo]

Closing in favor of #177