Convert Remaining Atmos Appearance Visualizers (#9582)

* Convert atmos plaque to generic visualizer

Use generic visualizer for atmos plaque. Also enables zumos plaque to
appear.

* Convert gas canister connecters

* Remove manual layer creation

* Remove gas canister visualizer

* Convert gas analyzers to generic visualizers

* Convert fire visualizer

* Fix layers on plasma and air canisters

* Remove commented out fire visualizer in barricades

* Add documentation for fire visuals component

* Remove redundant visualizer for milkalyzer

* Remove rogue item group

Content.Server/Entry/IgnoredComponents.cs

@@ -35,6 +35,7 @@ namespace Content.Server.Entry
             "AMEControllerVisuals",
             "AMEShieldingVisuals",
             "PipeColorVisuals",
+            "FireVisuals",
         };
     }
 }