fix(core): Optimizes strings / .NET 5 compatibility changes (#354)

- [X] Removes some string allocations (e.g. split)
- [X] Optimizes some collections
- [X] Converts insensitive to extension methods of built-ins.
- [X] Adds ordinal (case sensitive) string helpers
- [X] Fixes conditionals for in-game commands so they use Ordinal comparisons.
- [X] Replaces ToLower.Contains with InsensitiveContains
- [X] Adds ValueStringBuilder
- [X] Implements ValueStringBuilder in a few places where it makes sense
- [X] Removes the redundant Wrap function and replaces it with an optimized version
- [X] Fixes list conversions in Utility

Closes #351

Bumps release version

Projects/Benchmarks/Program.cs

@@ -1,4 +1,5 @@
 using BenchmarkDotNet.Running;
+using Benchmarks.BenchmarkUtilities;
 
 namespace Benchmarks
 {
@@ -8,7 +9,8 @@ namespace Benchmarks
         {
             // var featureFlags = BenchmarkRunner.Run<BenchmarkFeatureFlags>();
             // var packetConstruction = BenchmarkRunner.Run<BenchmarkPacketConstruction>();
-            var broadcast = BenchmarkRunner.Run<BenchmarkPacketBroadcast>();
+            // var broadcast = BenchmarkRunner.Run<BenchmarkPacketBroadcast>();
+            var stringHelpers = BenchmarkRunner.Run<BenchmarkStringHelpers>();
         }
     }
 }