logs: Promote API calls errors to higher severirty logs (ERROR)

[y0sher]

Description

Errors in interacting with external APIs like CL,EL nodes are something we want to present to the user right away when they happen.

Task

Make sure we print Error to the console whenever a call to EL/CL failed. Never silence them with Debug.

This might a bit harder said than done, some errors are swallowed by other errors, for example a processing of a message in consensus can trigger a call to CL which will result in an error, hence there was an error processing the message (which usually goes to debug).