[SIGMON-650] new reference test selection strategy

Context

• task: https://its.cern.ch/jira/browse/SIGMON-650

What was done

• reference test selection moved to reference module

TODO

• ? clarify with Zinur the thermocycles (I created the subtask)

QA

• https://acc-sonar.app.cern.ch/dashboard?branch=SIGMON-650_reference_tests&id=lhc-sm-api
• code was unit tested
• acceptance tests were written

Review objectives

• ? assessment of code functionality
• ? assessment of code quality
• ? identifying potential refactorings / logic common to other projects
• ? knowledge sharing
• ? getting help to understand a piece of code

Closes SIGMON-650