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/UOContent/Misc/ResourceInfo.cs

@@ -870,22 +870,22 @@ namespace Server.Items
         /// </summary>
         public static CraftResource GetFromOreInfo(OreInfo info)
         {
-            if (info.Name.Contains("Spined", StringComparison.Ordinal))
+            if (info.Name.ContainsOrdinal("Spined"))
             {
                 return CraftResource.SpinedLeather;
             }
 
-            if (info.Name.Contains("Horned", StringComparison.Ordinal))
+            if (info.Name.ContainsOrdinal("Horned"))
             {
                 return CraftResource.HornedLeather;
             }
 
-            if (info.Name.Contains("Barbed", StringComparison.Ordinal))
+            if (info.Name.ContainsOrdinal("Barbed"))
             {
                 return CraftResource.BarbedLeather;
             }
 
-            if (info.Name.Contains("Leather", StringComparison.Ordinal))
+            if (info.Name.ContainsOrdinal("Leather"))
             {
                 return CraftResource.RegularLeather;
             }