Emit Ecto timings as metrics #896

Job	Run time
lint_git	6s
lint_compile	1m 1s
test_diagnose	1m 35s
lint_format	13s
test_no_nif	44s
lint_credo	1m 0s
lint_dialyzer	3m 17s
test (1.19.5, 27)	57s
test (latest, 28)	52s
test (main, 28)	56s
validate-changesets / Validate changesets	9s
test (1.19.5, 26)	1m 0s
test (1.19.5, 28)	56s
test (1.12, 24)	58s
test (1.15, 26)	1m 0s
test (1.18, 27)	54s
test (1.16, 26)	58s
test (1.14, 25)	1m 9s
test (1.17, 27)	56s
test (1.13, 24)	57s
	19m 38s

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