feat: add attachment support #1688

Job	Run time
Tests (ubuntu-latest, 7.4, lowest)	46s
Tests (ubuntu-latest, 7.3, lowest)	53s
Tests (ubuntu-latest, 7.2, lowest)	29s
Tests (ubuntu-latest, 7.3, highest)	1m 2s
Tests (ubuntu-latest, 7.4, highest)	1m 5s
Tests (ubuntu-latest, 8.0, lowest)	53s
Tests (ubuntu-latest, 7.2, highest)	27s
Tests (ubuntu-latest, 8.3, highest)	49s
Tests (ubuntu-latest, 8.2, highest)	52s
Tests (windows-latest, 7.2, highest)	2m 49s
Tests (windows-latest, 7.2, lowest)	1m 49s
Tests (ubuntu-latest, 8.2, lowest)	56s
Tests (ubuntu-latest, 8.0, highest)	46s
Tests (ubuntu-latest, 8.1, highest)	48s
Tests (windows-latest, 7.3, highest)	2m 24s
Tests (ubuntu-latest, 8.1, lowest)	52s
Tests (windows-latest, 7.4, lowest)	1m 49s
Tests (ubuntu-latest, 8.4, lowest)	54s
Tests (ubuntu-latest, 8.4, highest)	47s
Tests (windows-latest, 7.4, highest)	1m 31s
Tests (ubuntu-latest, 8.3, lowest)	53s
Tests (windows-latest, 7.3, lowest)	1m 44s
Tests (windows-latest, 8.0, highest)	1m 41s
Tests (windows-latest, 8.1, lowest)	4m 23s
Tests (windows-latest, 8.1, highest)	1m 51s
Tests (windows-latest, 8.3, lowest)	1m 46s
Tests (windows-latest, 8.0, lowest)	1m 33s
Tests (windows-latest, 8.2, lowest)	1m 47s
Tests (windows-latest, 8.4, highest)	1m 48s
Tests (windows-latest, 8.3, highest)	1m 48s
Tests (windows-latest, 8.4, lowest)	1m 48s
Tests (windows-latest, 8.2, highest)	1m 30s
	45m 13s

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