make bot smaller

[ssube]

The bot file/class has been flagged by codeclimate as being too long, multiple methods as being too complex, and overall poor quality. This is absolutely a god class with a service locator mixed in. Fix it!

https://codeclimate.com/github/ssube/isolex/src/Bot.ts?strict=false&to_sha=56c871bf2074199f182dec3e8cfb032edd3e47f3

• service data/option types
  • two service types (filter, listener) are missing their own options, leading to <Foo, {}> types when creating them
  • filter options
  • listener options
• instance checks
  • there are two clumsy instance checks inside a loop, which should not be necessary
  • command check
  • message check
• cognitive complexity
  • there are some ugly, complicated methods that need to be simplified
  • receive
  • startServices
• overall length
  • the Bot itself is too long by a few lines, split parts out
  • service locator