[Cmake] split sfm library

[servantftechnicolor]

When compiling in debug under windows, alicevision_sfm generate more symbols than msvc can handle.

This PR split alicevision_sfm in two :

• alicevision_sfm
• alicevision_sfm_bundle which contains all the ceres/bundle related objects.

Alicevision_sfm directly depends on alicevision_sfm_bundle so the rest of the world does not need to know that change.