fix: avoid conflicting default values & some refactoring

[kkafar]

Description

This PR:

• Solves [GA] Time based termination criteria conflicts with generation based one #191 (no more conflicting default GAParams values)
• Adds ton of assertions & much better error handling to builders
• Splits presets module into two separate (one module for one builder), but there is no change from end-user perspective - I've just found it tedious & impractical to work with multiple impls in single file
• Adds tests for builder module
• Moves responsibility of setting default values to particular builders

Linked issues

Resolves #191
Resolves #192
Resolves #145