Add fluid result averaging, FluidMeshInfo, and Faces

[PProfizi]

• Mark TODO: filter-out zones from zone_ids and qualifiers different from requested location for integrated results
• Mark TODO: Filter-out face zones from zone_ids or qualifiers when requesting results on cells
• Mark TODO: Filter-out cell zones from zone_ids or qualifiers when requesting results on faces
• Implement averaging with to_nodal_fc (cells to nodes and faces to nodes)
• Implement averaging with to_elemental_fc (nodes to cells, nodes to faces)

Logic: No averaging of integrated results anywhere else No averaging between faces and cells Averaging between nodes and cells Averaging between faces and nodes

[codecov[bot]]

Codecov Report

Merging #435 (4204663) into master (c9b5fc9) will decrease coverage by 0.11%. The diff coverage is 95.04%.

@@            Coverage Diff             @@
##           master     #435      +/-   ##
==========================================
- Coverage   83.49%   83.38%   -0.11%     
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  Files          44       45       +1     
  Lines        4640     4959     +319     
==========================================
+ Hits         3874     4135     +261     
- Misses        766      824      +58