Move to .NET 7 SIMD intrinsics (#3584)

Robust.Benchmarks/NumericsHelpers/HorizontalAddBenchmark.cs

@@ -0,0 +1,26 @@
+using BenchmarkDotNet.Attributes;
+using Robust.Shared.Analyzers;
+
+namespace Robust.Benchmarks.NumericsHelpers;
+
+[Virtual]
+[DisassemblyDiagnoser()]
+public class HorizontalAddBenchmark
+{
+    [Params(8, 32, 128)]
+    public int N { get; set; }
+
+    private float[] _inputA = default!;
+
+    [GlobalSetup]
+    public void Setup()
+    {
+        _inputA = new float[N];
+    }
+
+    [Benchmark]
+    public float Bench()
+    {
+        return Shared.Maths.NumericsHelpers.HorizontalAdd(_inputA);
+    }
+}