Ceres and SuiteSparse features

[KindDragon]

No description provided.

[jasjuang]

I tested this and everything compiles like usual for me

[KindDragon]

@jasjuang You mean everything ok or everything compiles even if you trying to install ceres[core]? :)

[jasjuang]

I tested vcpkg install ceres and vcpkg install ceres[lapack,suitesparse, cxsparse, eigen] and both works

[ras0219-msft]

Thanks! While testing, I noticed that eigen was actually called at the top level like:

find_package(Eigen3 REQUIRED)

so I've lifted that requirement up to the top of the package.