`@pure` annotation should also cover the case that a function is not pure but has no side effects

[lars-reimann]

Is your feature request related to a problem?

A function without side effects can at least be eliminated if its result is not used.

Desired solution

Replace @pure with @purity. The user can than choose between the variant pure and no side effects.

Possible alternatives (optional)

No response

Screenshots (optional)

No response

Additional Context (optional)

• SDS @Pure annotation
• SDS @NoSideEffects annotation