ATR-21215 - Implement probe chain legs as duplicated steps at the end of the alignment sequence

As described on ATR-21215, we implement tag & probe chains (for a single signature) by duplicating the steps in an alignment group that follows the tag leg. Changes implemented:

• Started from @shanisch's "master-TMMT-TagAndProbe" branch which allows electron chains to receive a probe argument that will be ignored when configuring hypo/reco.
• In the MenuSequence constructor, add IsProbe argument that triggers the cloning of the Hypo, InputMaker and the in-view sequence, appending "_probe" to relevant component names and outputs.
• Added recognition of the "probe" specification in electron sequences, such that the IsProbe flag is set when creating the MenuSequence.
• Updated MenuAlignmentTools to add the EgammaProbe and MuonProbe alignment groups, currently placed at the very end.
• Updated the chain parsing so that the "extra" expressions are extracted before attempting to define the alignment group.
• Adapted checks for sequence duplication across steps to ignore sequences that are in views.
• Sets the probe view makers to use the cached reco from the tag leg in HLTCFConfig.

This MR inserts the necessary infrastructure, without yet adding any chains. Running egamma T&P chains in a full menu requires further debugging.