message: Add AllocFrozenValue OwnedFrozenValue
  Summary: Useful utility to have, and perfectly fits the trait.
diff: @@ -60,6 +60,14 @@ impl Display for OwnedFrozenValue {
  }
  }
  +impl AllocFrozenValue for OwnedFrozenValue {
  + fn alloc_frozen_value(self, heap: &FrozenHeap) -> FrozenValue {
  + // Safe because this is the standard expectation for alloc_frozen_value
  + // - you must keep the heap you allocate it on alive.
  + unsafe { self.owned_frozen_value(heap) }
  + }
  +}
  +
  impl OwnedFrozenValue {
  /// Create an [`OwnedFrozenValue`] - generally [`OwnedFrozenValue`]s are obtained
  /// from [`FrozenModule::get`](crate::environment::FrozenModule::get).
  