[SIGMON-162] RB_Analysis::analyze_qds and corrupted buffer

Context

• ticket: https://its.cern.ch/jira/browse/SIGMON-162

What was done

• analyze_qds uses second PM buffer if the data in the first one is corrupted
• analyze_qds_trigger warns if the quench developing data is missing
• logic split into functions

TODO

• ?

QA

• sonar is down
• code was unit tested
• let's say that the acceptance tests were written

Review objectives

• assessment of code functionality
• assessment of code quality
• identifying potential refactorings / logic common to other projects
• knowledge sharing