SIMD-accelerated gas mixtures. (SIMD atmos) (#2479)

* SIMD atmos

* Moles will always be a multiple of four.

* Component dependencies for grid atmos.

* Let's optimize allocations while we're at it!

* Inline this

* A bunch of atmos optimizations

* Fix crimes against atmos

* Microsoft moment

* Remove nuget.config

* do not reference Robust.UnitTests in Content.Benchmarks as it's unneeded.

* Revert "Remove nuget.config"

This reverts commit 872604ae6a51365af4075bb23687bd005befd8ac.

* Gas overlay optimization and fixes

* Lattice is now spess

* minor atmos tweaks

Content.Shared/Atmos/AtmosDirection.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Runtime.CompilerServices;
 using Robust.Shared.Maths;
 using Robust.Shared.Serialization;
 
@@ -135,6 +136,12 @@ namespace Content.Shared.Atmos
         {
             return direction & ~other;
         }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static bool IsFlagSet(this AtmosDirection direction, AtmosDirection other)
+        {
+            return (direction & other) != 0;
+        }
     }
 
     public sealed class AtmosDirectionFlags { }