[MacPorts] #54752: cmake 1.1 PG : ccache support

[René J.V. Bertin]

> In the cmake-1.1 PortGroup, where this is all handled, I don't see that
> the appropriate configure args are ever actually added to the
> configure.pre_args list.

That's done via the `cmake::ccaching` procedure.

I can confirm that `CMAKE_<lang>_LAUNCHER` works with the make and ninja generators.

> For our Python ports - and specifically, those that are using Ninja - the CCache variables must be set via the environment to have an effect.

Which ports are that (i.e. where does cmake come in with those)?