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>

Resources/Textures/Effects/chemsmoke.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 96, "y": 96}, "license": "CC-BY-SA-3.0", "copyright": "Taken from https://github.com/discordia-space/CEV-Eris/blob/81b3a082ccdfb425f36bbed6e5bc1f0faed346ec/icons/effects/chemsmoke.dmi", "states": [{"name": "chemsmoke", "directions": 4, "delays": [[0.2, 0.2, 0.2], [0.2, 0.2, 0.2], [0.2, 0.2, 0.2], [0.2, 0.2, 0.2]]}]}

Resources/Textures/Effects/foam.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "license": "CC-BY-SA-3.0", "copyright": "Taken from https://github.com/discordia-space/CEV-Eris/blob/81b3a082ccdfb425f36bbed6e5bc1f0faed346ec/icons/effects/effects.dmi", "states": [{"name": "foam", "directions": 1}, {"name": "foam-dissolve", "directions": 1, "delays": [[0.1, 0.1, 0.1, 0.1, 0.1, 0.1]]}, {"name": "ironfoam", "directions": 1}, {"name": "metalfoam", "directions": 1}, {"name": "mfoam", "directions": 1}, {"name": "mfoam-dissolve", "directions": 1, "delays": [[0.1, 0.1, 0.1, 0.1, 0.1, 0.1]]}]}