[StateStore] Specify ttl / metadata in SaveBulkStateAsync

[fgheysels]

Describe the feature

The DaprClient class contains a method which allows to store multiple states into a state-store at once: SaveBulkStateAsync.
However, this method doesn't allow you to specify meta-data which is (afaik) required to specify the ttl of the cached items.
I believe an overload of the SaveBulkStateAsync method must be provided that allows you to specify the TTL.

Release Note

RELEASE NOTE: ADD New feature in Dapr.

RELEASE NOTE:

[fgheysels]

Ah, I've seen the ttl can be specified via the SaveStateItem type instead.
So, this can be closed I guess :)