Add code coverage bot 🤖 #6396

Job	Run time
Multiarch Container Image	7m 4s
Docs	2m 15s
Linux Arm	12m 58s
Linux x86-64	39m 13s
Mac Arm	1s
Mac Intel	26m 54s
Repolinter	37s
Stdlib	2m 16s
Windows	44m 1s
Mac Universal Binary	0s
Anchor Integration test	5m 39s
Polkadot Integration test with subxt	7m 7s
Polkadot Integration test	6m 0s
Solana Integration test	3m 43s
Visual Code Extension	1m 52s
Coverage report	2m 59s
	2h 42m 39s

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