Added Vapor 4 tags to those libraries that now support it.

[majortom64]

Deleted the dead services.

Added two books.

• Project Name:
• Project URL:
• Project Description:
• Why it should be added to awesome-vapor:
• Project has at least 15 stars (if it’s a GitHub project)
• Project supports at least Vapor 3
• Project supports at least Swift 5
• I used correctly sized dash and ended the entry with a full stop 🤓
  I have not yet started adding other libraries for this yet, just worked on updating to Vapor 4. I will do that next.