Unify interface for fixtures

[SwinX]

Description

The goal is to unify creation and usage of all fixtures

Suggested solution

Each fixture should be

• built with builder function
• builder should return either a fixture or set of fixtures as named object
• this object intended to be destructured into test fixtures

Alternative

No response

Additional context

No response

Validations

• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.