Add metadata to save field

Expected Behavior

Should be able to use save with metadata

Actual Behavior

We only allow key and value so cannot do this

Steps to Reproduce the Problem

    await daprClient.state.save(Config?.dapr?.components?.state?.cosmos?.name, [
      {
        key: "test",
        value: { hello: "world", partitionID: 2083 },
        metadata: {
          partitionKey: "partitionID"
        }
      }
    ])

Will result in

== APP == Error: {"errorCode":"ERR_STATE_SAVE","message":"failed saving state in state store state-azure-cosmosdb: BadRequest, Message: {\"Errors\":[\"PartitionKey extracted from document doesn't match the one specified in the header. Learn more: https:\\/\\/aka.ms\\/CosmosDB\\/sql\\/errors\\/wrong-pk-value\"]}\r\nActivityId

[XavierGeerinck]

Tracking the PartitionKey not working in https://github.com/dapr/components-contrib/issues/1794

For the JS SDK we should implement the metadata part (see fetch example in the issue above)

[XavierGeerinck]

For follow-up: https://github.com/dapr/components-contrib/issues/1794