[FEATURE] System scheduler

[AndreasLrx]

Describe the feature Behavior

Implement a system scheduler allowing to specify at which periods the systems should be runned.

I am thinking of something like a cron schedule expression to define how often should a system run:

• Every x ticks
• Every x seconds/minutes and so on
• Every x execution of another system ?

Describe the needs

Not all systems needs to be run at every ticks.
For example a game auto save system needs to be called only once in a while (or called exlicitly at crucial moments)

Anything else?

No response