Deprecate config builder static factory methods

Suggested Release Note:

Static methods that return new config builders (like `TimeoutConfig.builder()` and `TimeoutConfig.kvTimeout(Duration)` to name just two) are now deprecated. Here is an example of the recommended way to configure client settings:

Cluster cluster = Cluster.connect(

connectionString,

ClusterOptions.clusterOptions(username, password)

.environment(env -> env

.timeoutConfig(timeout -> timeout

.kvTimeout(Duration.ofSeconds(3))

)

)

);

I believe this primarily affects the Java SDK, and probably doesn't need to be mentioned in the Scala or Kotlin release notes.