Add Chainlink feed registry detector #2018

Job	Run time
tests (ubuntu-latest, unit, 3.8)	57s
tests (ubuntu-latest, unit, 3.12)	52s
tests (ubuntu-latest, integration, 3.8)	3m 4s
tests (ubuntu-latest, integration, 3.12)	3m 12s
tests (ubuntu-latest, tool, 3.8)	58s
tests (ubuntu-latest, tool, 3.12)	49s
tests (windows-2022, unit, 3.8)	1m 48s
tests (windows-2022, unit, 3.12)	1m 25s
tests (windows-2022, integration, 3.8)	3m 41s
tests (windows-2022, integration, 3.12)	2m 40s
tests (windows-2022, tool, 3.8)	3m 25s
tests (windows-2022, tool, 3.12)	3m 7s
coverage	21s
	26m 19s

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