feat: use GH Actions and separate Dockerfiles #19

Job	Run time
prepare	6s
go-apps / update-go-version	0s
go-apps / gofmt / go-fmt	13s
go-apps / golangci-lint / lint	26s
go-apps / go-build / go-build-smoke-test	20s
go-apps / go-test / go-test	1m 0s
go-apps / goimports / goimports	17s
go-apps / go-vet / go-vet	18s
go-apps / govulncheck / govulncheck	24s
build (fdsn-holdings-consumer, ./cmd/fdsn-holdings-consumer) / build	1m 12s
build (fdsn-ws, ./cmd/fdsn-ws) / build	1m 11s
build (fdsn-quake-consumer, ./cmd/fdsn-quake-consumer) / build	1m 1s
build (fdsn-ws-nrt, ./cmd/fdsn-ws-nrt) / build	58s
build (fdsn-slink-db, ./cmd/fdsn-slink-db) / build	1m 15s
	8m 41s

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