Implement SphericalMesh.get_indices_at_coords#3919

EdenRochmanSharabi wants to merge 1 commit intoopenmc-dev:developopenmc-dev/openmc:developfrom

EdenRochmanSharabi:spherical-mesh-get-indices-at-coordsEdenRochmanSharabi/openmc:spherical-mesh-get-indices-at-coordsCopy head branch name to clipboard