Deploy connectors with "STOPPED" state

[ThomasCAI-mlv]

Problem

It is not possible to deploy a paused connector with ns4kafka.

Suggestion

Implement the possibility to deploy connectors with initial state "STOPPED"
It can be a query param on the connector controller: POST /api/namespaces/{{namespace}}/connectors

Alternatives Considered

It is possible to deploy connector with the Kafka Connect API with this field:

{
   "name": "myConnectorName",
   "config": {
       "connector.class": "io.confluent.connect.replicator.ReplicatorSourceConnector"
   },
   "initial_state": "STOPPED"
}

Then import to ns4kafka with kafkactl import co myConnectorName