[ITS] Anomalous clusters plots

[nicolovalle]

This PR adds two sets of 2D plots published by the cluster task:

• Number of long clusters vs chip ID (3 plots, for the IB layers)
• Number of hits as sum of the clusters size for those events with at least one long cluster, vs chip ID (3 plots, for the IB layers)

Tested locally

[nicolovalle]

cc @IsakovAD @iravasen

[IsakovAD]

Hello @nicolovalle,

Thank you very much for such prompt implementation. I think that it is better to keep old way how we calculated information about chip, or I am missing something?

[nicolovalle]

Hello @nicolovalle,

Thank you very much for such prompt implementation. I think that it is better to keep old way how we calculated information about chip, or I am missing something?

Hi, I left a comment inline.. to my understanding that was un unused variable