effects for memory management

[michaellilltokiwa]

Right now automatic memory management in fuzion is always done by gargabe collectors. This works well in most cases. Would be cool though to have effects to control memory management for parts of the code, like:

• no_heap
• gc
  • high throughput
  • low latency
• reference counting
• borrow_checking

[fridis]

This is related to #2471.