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/Server/MultiData.cs

@@ -152,7 +152,7 @@ namespace Server
 
                     stream.Seek(offset + headerSize, SeekOrigin.Begin);
 
-                    Span<byte> sourceData = new byte[compressedSize];
+                    Span<byte> sourceData = GC.AllocateUninitializedArray<byte>(compressedSize);
 
                     if (stream.Read(sourceData) != compressedSize)
                     {
@@ -163,7 +163,7 @@ namespace Server
 
                     if (compressionMethod == 1)
                     {
-                        data = new byte[decompressedSize];
+                        data = GC.AllocateUninitializedArray<byte>(decompressedSize);
                         Zlib.Unpack(data, ref decompressedSize, sourceData, compressedSize);
                     }
                     else