Create a dedicated job for coverage submission to codecov #584

Job	Run time
mmg-debug / ci (ubuntu-20.04, on, off, on, off, int32_t)	1h 17m 13s
mmg-debug / ci (ubuntu-20.04, on, off, off, off, int32_t)	1h 40m 6s
mmg-debug / ci (ubuntu-20.04, off, off, on, off, int32_t)	1h 2m 5s
mmg-debug / ci (ubuntu-20.04, off, off, off, off, int32_t)	1h 13m 34s
mmg-debug / ci (macos-12, on, off, on, off, int32_t)	39m 37s
mmg-debug / ci (macos-12, on, off, off, off, int32_t)	1h 18m 25s
mmg-debug / ci (macos-12, off, off, on, off, int32_t)	32m 53s
mmg-debug / ci (macos-12, off, off, off, off, int32_t)	45m 0s
mmg-debug / ci (ubuntu-20.04, off, off, off, on, int32_t)	3m 29s
mmg-debug / ci (macos-12, off, off, off, on, int32_t)	12m 39s
mmg-debug / ci (ubuntu-20.04, off, on, on, off, int32_t)	1h 1m 40s
mmg-debug / ci (macos-12, off, on, on, off, int32_t)	50m 43s
mmg-debug / ci (windows-2022, off, off, off, off, int32_t)	56m 44s
mmg-debug / ci (windows-2022, on, off, off, off, int32_t)	54m 42s
mmg-debug / ci (windows-2022, off, on, off, off, int32_t)	55m 23s
mmg-debug / ci (ubuntu-20.04, on, on, on, on, int64_t)	4m 5s
mmg-debug / ci (ubuntu-20.04, off, off, on, on, int64_t)	1h 11m 6s
mmg-debug / ci (ubuntu-20.04, off, off, off, off, int64_t)	1m 45s
mmg-debug / ci (macos-12, on, on, on, on, int64_t)	13m 39s
mmg-debug / ci (macos-12, off, off, off, off, int64_t)	3m 31s
mmg-debug / ci (windows-2022, on, on, off, off, int64_t)	4m 31s
mmg-debug / ci (windows-2022, off, off, off, off, int64_t)	5m 7s
mmg-debug / upload_coverage	16m 57s
	15h 24m 54s

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