GitLab

Implement a VSystem trait that can be implemented by Systems.

See merge request !1858

Addressed pine tree criticism by improving generation

See merge request !1859

switch server to the new Registry struct, this gets rid of RegistryFn pattern and simplyfies stuff, its a result of the Prometheus-tracy crate

 - get rid of old SysTimers for each system in favour of VSystem tracking
 - move metrics generation from lib.rs to own system
 - code cleanup
 - remove time tracking in common::sys

It will autodo some things, like track start and time and export those in system metrics
Add a origin and implement it for all Systems in Veloren

Improved ECS system for plugins to enable async execution of plugins in systems

See merge request !1857

added a white firework

See merge request !1856

Worldgen Improvements

See merge request !1768