Fix typos in cmake file, AABB default values

[pkomon-tgm]

• fix some typos in the CMake function alp_add_git_repository
• change default values for AABB to more reasonable ones
  • set std::numeric_limits<T>::max() as default for geometry::Aabb<N, T>.max
  • set std::numeric_limits<T>::min() as default for geometry::Aabb<N, T>.min
  • previously 0 was used, which lead to some counter-intuitive behavior when expanding a default-initialized Aabb by a single point; expected: covers only new point; actual: covers 0 and new point