Senior Roles (#18181)

* Senior Roles

* Senior Researcher and first wave of touch-ups

* Senior Physician and second wave of touch ups

* Senior Officer and third wave of clean ups

* Fourth wave of touch ups

* Playtimetracker fix, I hope

* Supervisor adjustment

* Sci assistant supervisor fix.

* Allow antags for all except Senior Officer.

Resources/Textures/Interface/Misc/job_icons.rsi/meta.json

@@ -147,6 +147,18 @@
         },
         {
             "name": "Zookeeper"
+        },
+        {
+            "name": "SeniorEngineer"
+        },
+        {
+            "name": "SeniorResearcher"
+        },
+        {
+            "name": "SeniorPhysician"
+        },
+        {
+            "name": "SeniorOfficer"
         }
     ]
 }