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/Configuration/ServerConfiguration.cs

@@ -266,7 +266,7 @@ namespace Server
                     break;
                 }
 
-                if (!ipStr.Contains(':', StringComparison.Ordinal))
+                if (!ipStr.ContainsOrdinal(':'))
                 {
                     ipStr += ":2593";
                 }