support mongodb connection string as configuration option

While trying out DBZ mongo connector today against Atlas, I realized that the current way to configure the connector regarding DB connection settings is less convenient than it could be. Users have to explicitly specify multiple separate config options, e.g.

• mongodb.hosts
• mongodb.user
• mongodb.password

and others such as SSL settings. IMHO the easier/"better" way to specify the DB connection settings is to use the connection string URI format which is documented here https://docs.mongodb.com/manual/reference/connection-string/

There are two formats, standard and DNS seed list. When working with MongoDB Atlas you can directly C&P this from the web UI and it would be nice if the connector supports this as is. For instance, this would be one simple example of such a connection string URI from Atlas:

mongodb+srv://<user>:<password>@<cluster-subdomain>.azure.mongodb.net/myDB?retryWrites=true&w=majority

or here in combination with the Java Driver

ConnectionString connectionString = new ConnectionString("mongodb+srv://<user>:<password>@<cluster-subdomain>.azure.mongodb.net/myDB?retryWrites=true&w=majority");
MongoClientSettings settings = MongoClientSettings.builder()
        .applyConnectionString(connectionString)
        .build();
MongoClient mongoClient = MongoClients.create(settings);