Add fluid result averaging, FluidMeshInfo, and Faces #1325

Job	Run time
debug	2s
Retro-compatibility (3.10, windows-latest, 232)	17m 35s
Retro-compatibility (3.10, windows-latest, 231)	6m 14s
Retro-compatibility (3.10, windows-latest, 222)	3m 55s
Retro-compatibility (3.10, windows-latest, 221)	4m 14s
Retro-compatibility (3.10, ubuntu-latest, 232)	8m 53s
Retro-compatibility (3.10, ubuntu-latest, 231)	4m 23s
Retro-compatibility (3.10, ubuntu-latest, 222)	3m 40s
Retro-compatibility (3.10, ubuntu-latest, 221)	3m 30s
Style Check	1m 18s
tests (3.7, windows-latest)	9m 45s
tests (3.7, ubuntu-latest)	7m 21s
tests (3.8, windows-latest)	9m 38s
tests (3.8, ubuntu-latest)	5m 8s
tests (3.9, windows-latest)	10m 14s
tests (3.9, ubuntu-latest)	6m 35s
tests (3.10, windows-latest)	9m 26s
tests (3.10, ubuntu-latest)	7m 36s
examples / Setup	1s
docs / Documentation	11m 40s
docs / Check doc style / Documentation Style Check	56s
examples / Run Examples (3.10, windows-latest)	10m 40s
examples / Run Examples (3.10, ubuntu-latest)	6m 49s
upload-development-docs	0s
	2h 29m 33s

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