rewrite: complete overhaul with a more flexible code base

[haveachin]

This is a list of changes and additions to the 2.0 rewrite of Infrared

• [x] Complete overhaul of the config system
  • [x] Central config for the whole application
  • [x] Easy and dynamic way to map listeners to servers
  • [x] Wildcard support for domains (#37)
  • [x] Easy way to allow multiple domains on one server (#20)
  • [x] Global default values that can be overridden
  • [x] Default config generated if none exists (#100)
  • [x] Override online status response fields (#119)
• [x] ~~Legacy Support for Java Edition (#39)~~
• [x] Support for Bedrock edition (#44)
• [x] Default placeholder if no server is registered for FQDN (#85)
• [ ] TCPShield 2.5+ support (#71)
• [ ] Cache Server Ping Responses (#117)
• [x] Complete overhaul of Webhooks
  • [ ] (Optional) Comply to standard (#98)
  • [x] More data (#112, #113)
• [x] Expand Prometheus exporter
  • [x] Add request type data (status/login requests)
• [x] Complete overhaul of the REST API
  • [x] ~~Reload configurations~~ (Remote Provider)
  • [x] ~~CURD proxy configurations~~ (Remote Provider)
  • [x] Query connected players (#128)
  • [x] ~~Query gateways~~ (Architecture changed)
  • [x] Disconnect players
• [ ] Complete overhaul of the documentation
  • [ ] Document feature behavior
    • [ ] Wildcards
  • [ ] Webhooks
  • [ ] OpenAPI docs for REST API
• [x] Automatic CI and releases (#104)