[SIGMON-585] add relevant plots for the MI part of the pic2 analysis

Context

• task: https://its.cern.ch/jira/browse/SIGMON-585
• rendered MP3 notebook: https://gitlab.cern.ch/LHCData/lhc-sm-hwc/-/blob/SIGMON-585-add-relevant-plots-for-mi-part-of-pic2/ipq/AN_IPQ_PIC2_MP3.ipynb?ref_type=heads
• rendered MI notebook: https://gitlab.cern.ch/LHCData/lhc-sm-hwc/-/blob/SIGMON-585-add-relevant-plots-for-mi-part-of-pic2/ipq/AN_IPQ_PIC2_MI.ipynb?ref_type=heads
• mr with the analysis code: LHCData/lhc-sm-analysis/lhc-sm-powering!37 (merged)
• Zinur created some plots relevent to this part of the analysis

What was done

• refactor Zinur's plots and add them to the AN_IPQ_PIC2 notebook

TODO

• maybe extract a plotting functions to be reused for all PIC2 tests

QA

• code was not unit tested, because it's plots
• 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