Rework interface for GRL and PRW block configuration in CP algos

Currently, it is not possible to simultaneously provide configuration for event GRL cleaning and PRW block configuration for all years at once.

The use-case for this scenario is if users cannot use the default auto-configured GRL and PRW and lumicalc config files for their analysis but need to specify them (for example because they use non-standard GRL where one also needs corresponding lumicalc and actualMu files for PRW).

When using YAML configuration, this limitation would imply writing separate YAML file for each sub-campaign (e.g. mc20a/d/e, mc23a/d)...we don't want to repeat this bookkeeping nightmare again.

The proposed solution here introduces extra options userLumicalcFilesPerCampaign, userPileupConfigsPerCampaign for PileupAnalysisConfig and userGRLFilesPerYear for EventCleaningConfig. These options require passing a dictionary which maps MC campaign or data year onto a list of files.

For backwards compatibility reasons, also the old userLumicalcFiles, userPileupConfigs and userGRLFiles, which simply require a list of files each, are kept. A check is done to ensure that people don't accidentally use both the legacy and the per-year/campaign options.

The PRW auto-configuration was also slightly cleaned up to make the control logic a bit clearer.