SolutionContainer refactors (#2954)

* removes unused method

* Code uncluttering (Also removed the netcode, color code, and visuals, need to rewrite)

* SolutionContainerVisualState

* Removes caching of SolutionContainer Color

* ChemicalsAdded() and ChemicalsRemoved() for updating appearance and handling reaction checks

* SolutionContainerComponentState

* Netcode

* ChemMasterComponent no longer creates a SolutionContainerComponent with new(), uses a Solution instead

* Enable nullable in SolutionContainer implementations

* Some review fixes

* uses IReadOnlyLists in ChemMaster

* Comments

* review fixes 3

* ReagentUnit documentation

* Review fixes

* spelling fix

* spelling 2

* typo

Co-authored-by: py01 <pyronetics01@gmail.com>

Content.Shared/Chemistry/ReagentUnit.cs

@@ -1,10 +1,14 @@
-using System;
+using System;
 using System.Globalization;
 using System.Linq;
 using Robust.Shared.Interfaces.Serialization;
 
 namespace Content.Shared.Chemistry
 {
+    /// <summary>
+    ///     Represents a quantity of reagent, to a precision of 0.01.
+    ///     To enforce this level of precision, floats are shifted by 2 decimal points, rounded, and converted to an int.
+    /// </summary>
     [Serializable]
     public struct ReagentUnit : ISelfSerialize, IComparable<ReagentUnit>, IEquatable<ReagentUnit>
     {

Content.Shared/Chemistry/Solution.cs

@@ -63,6 +63,11 @@ namespace Content.Shared.Chemistry
                 () => _contents);
         }
 
+        public bool ContainsReagent(string reagentId)
+        {
+            return ContainsReagent(reagentId, out _);
+        }
+
         public bool ContainsReagent(string reagentId, out ReagentUnit quantity)
         {
             foreach (var reagent in Contents)