Module maturities are very out of date

The maturity of the modues in MaxScale is very out of date and does not reflect the real maturity of the modules. For example, the kafkacdc module is considered ALPHA when the kafkaimporter is GA, the schemarouter is BETA and the binlogrouter is still ALPHA.

One could argue that the per module maturity is not a useful indication of the actual maturity of the module and should be removed or at least made so that there's some consistency in them.