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

Simulation/FastShower/FastCaloSim/share/FastShowerCellBuilderTool_test.py

@@ -127,10 +127,10 @@ exp_cells = {
     (1,  2,  1,  0,  7,  36) :   109.5,
     (1,  2,  1,  0,  7,  37) :  1353.6,
     (1,  2,  1,  0,  7,  38) :   178.6,
-    (3,  3, -1, 28, 15,   3) :  4621.6,
-    (3,  3, -1, 29, 15,   3) :   616.5,
-    (3,  3,  1, 24, 15,   3) :  1138.1,
-    (3,  3,  1, 25, 15,   3) :  5684.5,
+    (3,  3, -1, 28, 15,   3) :  4606.0,
+    (3,  3, -1, 29, 15,   3) :   623.9,
+    (3,  3,  1, 24, 15,   3) :  1149.3,
+    (3,  3,  1, 25, 15,   3) :  5667.7,
     }