chore: rename config `ChainName` to `ChainType` #18

Job	Run time
docker_pipeline / docker_build	40s
lint_test / build	37s
lint_test / integration-tests	15s
lint_test / check-mock-gen	0s
lint_test / lint	3m 20s
lint_test / unit-tests	29s
docker_pipeline / dockerhub_publish	0s
docker_pipeline / ecr_publish	0s
	5m 21s

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