Add Smoke and Foam chemical reaction effects. (#2913)

* Adds smoke reaction effect

* smoke tweaks

* address reviews

* Smoke fix

* Refactor smoke and add foam

* Fix stuff

* Remove thing

* Little things

* Address some comments

* Address more things

* More addressing

* License stuff

* Address refactor request

* Small things

* Add nullability

* Update Content.Server/GameObjects/EntitySystems/SolutionAreaEffectSystem.cs

Co-authored-by: Paul Ritter <ritter.paul1@googlemail.com>

Content.Server/GameObjects/EntitySystems/SolutionAreaEffectSystem.cs

@@ -0,0 +1,19 @@
+#nullable enable
+using Content.Server.GameObjects.Components.Chemistry;
+using JetBrains.Annotations;
+using Robust.Shared.GameObjects.Systems;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    [UsedImplicitly]
+    public class SolutionAreaEffectSystem : EntitySystem
+    {
+        public override void Update(float frameTime)
+        {
+            foreach (var inception in ComponentManager.EntityQuery<SolutionAreaEffectInceptionComponent>())
+            {
+                inception.InceptionUpdate(frameTime);
+            }
+        }
+    }
+}