Create `BoundaryInfo` methods for surface or lattice crossing

[pshriwise]

Description

Whenever we cross a surface the following boilerplate code appears

if (boundary.lattice_translation[0] != 0 ||
    boundary.lattice_translation[1] != 0 ||
    boundary.lattice_translation[2] != 0) {
  ...
}

A method like bool BoundaryInfo::lattice_crossing() would be useful and more clear.

Alternatives

Leave well enough alone.

Compatibility

Should be an internal refactor, no compatibility issues.

[caderache2014]

@pshriwise if no one objects, I would like to take this on

[pshriwise]

It's all yours!