[FTheoryTools] Overhaul Serialization #15675

Job	Run time
doctest (1.10, ubuntu-latest)	24m 16s
test (1.6, short, ubuntu-latest)	1h 10m 4s
doctest (1.11-nightly, ubuntu-latest)	22m 37s
test (1.6, long, ubuntu-latest)	55m 35s
doctest (nightly, ubuntu-latest)	22m 4s
test (1.10, short, ubuntu-latest)	50m 57s
doctest (1.10, ubuntu-latest, depwarn=error)	23m 50s
test (1.10, long, ubuntu-latest)	45m 46s
doctest (1.10, macOS, RPTU)	12m 47s
test (1.11-nightly, short, ubuntu-latest)	1h 3m 22s
test (1.11-nightly, long, ubuntu-latest)	50m 20s
test (nightly, short, ubuntu-latest)	1h 3m 42s
test (nightly, long, ubuntu-latest)	51m 55s
test (1.10, short, ubuntu-latest, depwarn=error)	52m 27s
test (1.10, long, ubuntu-latest, depwarn=error)	45m 39s
test (1.10, short, macOS, RPTU)	11m 36s
test (1.10, long, macOS, RPTU)	12m 37s
test (1.10, book, ubuntu-latest)	33m 55s
	11h 53m 29s

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