Remove ETX as Flecs now supports Empty

src/gaemstone.ECS/EntityBuilder.cs

@@ -113,7 +113,7 @@ public class EntityBuilder<TContext>
 			_symbol    = alloc.AllocateCString(_symbol),
 			_add_expr  = alloc.AllocateCString(Expression),
 			use_low_id = UseLowId,
-			_sep       = CStringExtensions.ETX,
+			_sep       = CStringExtensions.Empty,
 		};
 
 		var add = desc.add; var index = 0;

src/gaemstone.ECS/EntityPath.cs

@@ -197,7 +197,7 @@ public class EntityPath
 		foreach (var part in path)
 			fixed (byte* ptr = part.AsSpan())
 				if (skipLookup || (parent = new(ecs_lookup_child(world, parent, ptr))).IsNone) {
-					var desc = new ecs_entity_desc_t { _name = ptr, _sep = CStringExtensions.ETX };
+					var desc = new ecs_entity_desc_t { _name = ptr, _sep = CStringExtensions.Empty };
 					if (parent.IsSome) desc.add[0] = Id.Pair(FlecsBuiltIn.ChildOf, parent);
 					parent = new(ecs_entity_init(world, &desc));
 					skipLookup = true;

src/gaemstone.ECS/Utility/CStringExtensions.cs

@@ -8,7 +8,6 @@ namespace gaemstone.ECS.Utility;
 public unsafe static class CStringExtensions
 {
 	public static CString Empty { get; } = (CString)"";
-	public static CString ETX { get; } = (CString)"\x3"; // TODO: Temporary, until flecs supports Empty.
 
 	public static unsafe byte[]? FlecsToBytes(this CString str)
 	{