feat(cat-gateway): Add Chain Follower metrics to improve observability #6166

Job	Run time
ci / discover	19s
ci / check / .+check-markdown	1m 15s
ci / check / .+check-spelling	1m 20s
ci / check / .+check-sqlfluff	2m 2s
ci / check / ./catalyst-gateway+check	56s
ci / check / ./catalyst-gateway+check-builder-src-cache	53s
ci / check / ./catalyst_voices+check-code-formatting	50s
ci / check / ./catalyst_voices+check-license	38s
ci / check / ./catalyst_voices+check-package-publishing	50s
ci / check / ./catalyst_voices+check-static-analysis	2m 36s
ci / check / ./catalyst_voices/packages/libs/catalyst_key_derivation/rust+check	58s
ci / check / ./utilities/wallet-tester+check	37s
ci / build	0s
ci / package	0s
ci / test	0s
ci / release	0s
ci / docs	0s
ci / final	2s
ci / deploy	0s
test_reporting / Generate test reports	6m 23s
test_reporting / Generate coverage report	0s
test_reporting / Generate allure report	0s
test_reporting / Upload coverage report	2s
	19m 41s

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