Draft: [trigEGam] Integration beteween mongroups and TrigEgammaMonitoring

This MR is to include mongroups inside the TrigEgammaMonitoring framework.

• A method was implemented in the TrigEgammaMonitCategoryMT reading, for now, the mongoups from JSON local file produced by a ART test.
• At this moment, only the primary chains was configured, and then, called inside the TrigEgammaMonitorConfigMT.py file .
• In a next MR, we will include a logic to route chains to shifter and expert folders automatically, according to their respective mongroups.

JIRA Ticket: ATR-25841 .

ping: @safarzad , @cjmeyer , @fernando , @kyjones and @jlieberm

Trigger/TriggerCommon/TriggerMenuMT/python/HLT/Config/MenuComponents.py

@@ -22,7 +22,7 @@ from TrigCompositeUtils.TrigCompositeUtils import legName
 from AthenaCommon.Configurable import ConfigurableRun3Behavior
 from AthenaConfiguration.ComponentAccumulator import appendCAtoAthena, conf2toConfigurable
 
-from collections import MutableSequence
+from collections.abc import MutableSequence
 import collections.abc
 import re