[Feature Request] Allow compiling as a static library

[davidelahoz]

TL2Cgen is quite useful for deploying statistic models to production. However, sometimes dynamic libraries cannot be used in some systems (for example bare-metal programmed embeded systems cannot use them normally). In order to use the model in those cases I manually modify the cmakelists.txt file generated to use STATIC instead of SHARED.

It would be nice if that could be done from python