Enhance testing

Testing is needed at some points, should improve false ban rate and bugs. Some things I want to unit test in the (near) future:

• *container (+actions)
• nbt data parsing
• rendering (maybe dummy render system implementation?)
  • dynamic textures
  • keybindings
  • hud/gui?
  • renderer
    • fluid preparing
    • block preparing
• modding
• network
  • packets
    • chunk
    • commands
    • initialize
    • respawn
    • …
  • whole stack
  • byte buffers
• chat signing
• chunk mesh generation?
• entity data
• profiles?
• minecraft biome noise
• world border
• light engine
• yggdrasil
• tinting
• raytracing
• *digging
• *bridging/block placing
• block/item models
• entity models
• model bakery
• *interactions
  • attacking
  • entites
  • items
  • blocks