Version is not set when recreating Aggregate from SnapShot

[totemcaf]

Describe the bug

When an Aggregate is loaded by the AggregateStore, if the aggregate has Snapshots configured, after initializing the Aggregate with the Snapshot data, the Aggregate version is not modified and remains in 0.

The eventhorizon.Snapshot structure contains the Version field, but it is not set in the Aggregate.

If the Aggregate contains more events (not included in the Snapshot), the application of this events will set the Version correctly, and the error is hidden.

To Reproduce
Steps to reproduce the behavior:

1. Create an Aggregate
2. Configure it to take a snapshot every 2 events
3. Send a command that fires 2 events in the aggregate
4. A Snapshot should be taken and persisted
5. Send another command that fires one event
6. The aggregate should be loaded from the Snapshot
7. The aggregate will have version 0 (it should be 2)
8. The new event will have version 1, instead of 3
9. The persistence of events will fail

Expected behavior
In step 6, when the aggregate is loaded from the Snapshot store, it should have Version 2
In step 8, the new event should have version 3, and it is correctly persisted

Screenshots
N/A

Additional context
Add any other context about the problem here.

func (r *AggregateStore) Load(ctx context.Context, aggregateType eh.AggregateType, id uuid.UUID) (eh.Aggregate, error) {
// ...
	fromVersion := 1

	if sa, ok := a.(eh.Snapshotable); ok && r.isSnapshotStore {
		snapshot, err := r.snapshotStore.LoadSnapshot(ctx, id)
		if err != nil {
			return nil, &eh.AggregateStoreError{
				Err:           err,
				Op:            eh.AggregateStoreOpLoad,
				AggregateType: aggregateType,
				AggregateID:   id,
			}
		}

		if snapshot != nil {
			sa.ApplySnapshot(snapshot)
			fromVersion = snapshot.Version + 1
			a.SetAggregateVersion(snapshot.Version) // <--- THIS IS THE MISSING LINE
		}
	}
// ...

[totemcaf]

I will provide a PR soon (hope, this week)