Add the ability to configure and control Storage Manager cache sizes

[sjperkins]

arcae needs the ability to control the cache size of the internal storage managers.

• While fixing a separate memory growth issue, @landmanbester's reproducer in Default epoch to "" to avoid re-initialisation of MSv2Structures on every xarray.open_datatree call xarray-ms#167 surfaced memory growth up to the size of the Measurement Set when arcae is used to read large MSs.
• This is due to the fact that Tiled Storage Managers have unbounded caches: See for instance https://casacore.github.io/casacore/classcasacore_1_1TiledColumnStMan.html.
• By contrast, Incremental and Standard Storage Managers cache sizes default to a single bucket.

The standard mechanism for controlling cache size is via TableProxy::setMaximumCacheSize.

• https://casacore.github.io/casacore/classcasacore_1_1TableProxy.html#a0dcb88a724570e21f81771db1bed3748