Expose Map Chart's Rendering Simplification in API

Since map charts "abused" as non-geographical representations of multi-layered data are not just a unique selling point for Spotfire but also the most time consuming charts to configure it is especially helpful to build custom extensions or IronPyhton scripts that create multi-layered map charts with a few clicks.

Sometimes it is necessary to switch the rendering simplification threshold from 5 to 6 corners to reduce rendering artefacts but this functionality is not exposed in the API.

Since most users are not even aware of this very special setting they just conclude that the map charts have massive rendering artefacts. So pls add it to the API to allow fast, user-friendly and good looking map chart automatization.

Thanks, Mark