cool framework

TODO:

• move away from imgui - write own renderer

• focusing system

• popups (will just be windows)

• key_up/down events

• alignment options

• grid layouting

• ability to request a layouting event that will be dispatched at the end of the frame

  • should also be able to specify weather you only want you, your parent or everyone to be layed out

• store absolute area in a (null by default) std::optional variable

  • make a getter absolute_area() that calculates if it's null or retrieves the value otherwise