Add Term, Filter, Query, Rule shorthands to World

src/gaemstone.ECS/Entity.cs

@@ -30,7 +30,7 @@ public unsafe readonly partial struct Entity<TContext>
 	public Entity<TContext>? Parent
 		=> GetOrNull(World, GetTargets(FlecsBuiltIn.ChildOf).FirstOrDefault());
 	public IEnumerable<Entity<TContext>> Children
-		=> Iterator<TContext>.FromTerm(World, new(FlecsBuiltIn.ChildOf, this)).GetAllEntities();
+		=> World.Term(new(FlecsBuiltIn.ChildOf, this)).GetAllEntities();
 
 
 	private Entity(World<TContext> world, Entity value)

src/gaemstone.ECS/World.cs

@@ -60,6 +60,12 @@ public unsafe struct World<TContext>
 		=> Pair(Entity<TRelation>(), Entity<TTarget>());
 
 
+	public Iterator<TContext> Term(Term term) => Iterator<TContext>.FromTerm(this, term);
+	public Filter<TContext> Filter(FilterDesc desc) => new(this, desc);
+	public Query<TContext> Query(QueryDesc desc) => new(this, desc);
+	public Rule<TContext> Rule(FilterDesc desc) => new(this, desc);
+
+
 	public bool Equals(World<TContext> other) => Value == other.Value;
 	public override bool Equals(object? obj) => (obj is World<TContext> other) && Equals(other);
 	public override int GetHashCode() => Value.GetHashCode();