Feature/required vertices preservation #603

Job	Run time
mmg-debug / ci (ubuntu-20.04, on, off, on, off, int32_t)	1h 18m 10s
mmg-debug / ci (ubuntu-20.04, on, off, off, off, int32_t)	1h 40m 57s
mmg-debug / ci (ubuntu-20.04, off, off, on, off, int32_t)	1h 1m 43s
mmg-debug / ci (ubuntu-20.04, off, off, off, off, int32_t)	1h 15m 39s
mmg-debug / ci (macos-12, on, off, on, off, int32_t)	46m 36s
mmg-debug / ci (macos-12, on, off, off, off, int32_t)	56m 28s
mmg-debug / ci (macos-12, off, off, on, off, int32_t)	31m 11s
mmg-debug / ci (macos-12, off, off, off, off, int32_t)	47m 15s
mmg-debug / ci (ubuntu-20.04, off, off, off, on, int32_t)	3m 54s
mmg-debug / ci (macos-12, off, off, off, on, int32_t)	7m 8s
mmg-debug / ci (ubuntu-20.04, off, on, on, off, int32_t)	1h 3m 31s
mmg-debug / ci (macos-12, off, on, on, off, int32_t)	31m 11s
mmg-debug / ci (windows-2022, off, off, off, off, int32_t)	52m 42s
mmg-debug / ci (windows-2022, on, off, off, off, int32_t)	55m 49s
mmg-debug / ci (windows-2022, off, on, off, off, int32_t)	59m 17s
mmg-debug / ci (ubuntu-20.04, on, on, on, on, int64_t)	4m 0s
mmg-debug / ci (ubuntu-20.04, off, off, on, on, int64_t)	1h 19m 27s
mmg-debug / ci (ubuntu-20.04, off, off, off, off, int64_t)	1m 53s
mmg-debug / ci (macos-12, on, on, on, on, int64_t)	7m 46s
mmg-debug / ci (macos-12, off, off, off, off, int64_t)	3m 48s
mmg-debug / ci (windows-2022, on, on, off, off, int64_t)	4m 36s
mmg-debug / ci (windows-2022, off, off, off, off, int64_t)	5m 14s
mmg-debug / upload_coverage	2m 19s
	14h 40m 34s

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