Reagents & Solutions (#280)

* Added the ReagentPrototype class.

* Added the new Solution class.

* Added new shared SolutionComponent to the ECS system.

* Added some basic element and chemical reagent prototypes.

* Added a new Beaker item utilizing the SolutionComponent. This is a testing/debug entity, and should be removed or changed soon.

* Added filters for code coverage.

* Nightly work.

* Added the server SolutionComponent class.

* Added a bucket.
Verbs set up for solution interaction.

* Adds water tank entity to the game.

* Added a full water tank entity.
Solutions are properly serialized.
Solution can be poured between two containers.

* Solution class can now be enumerated.
SolutionComponent now calculates the color of the solution.

* Minor Cleanup.

Content.Shared/Chemistry/ReagentPrototype.cs

@@ -0,0 +1,25 @@
+using Robust.Shared.Maths;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Utility;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Shared.Chemistry
+{
+    [Prototype("reagent")]
+    public class ReagentPrototype : IPrototype, IIndexedPrototype
+    {
+        public string ID { get; private set; }
+        public string Name { get; private set; }
+        public string Description { get; private set; }
+        public Color SubstanceColor { get; private set; }
+
+        public void LoadFrom(YamlMappingNode mapping)
+        {
+            ID = mapping.GetNode("id").AsString();
+            Name = mapping.GetNode("name").ToString();
+            Description = mapping.GetNode("desc").ToString();
+
+            SubstanceColor = mapping.TryGetNode("color", out var colorNode) ? colorNode.AsHexColor(Color.White) : Color.White;
+        }
+    }
+}