move generate_workflows_lib to core #105

Job	Run time
opentelemetry-api	37s
opentelemetry-exporter-opencensus	38s
opentelemetry-exporter-otlp-combined	45s
opentelemetry-exporter-otlp-proto-common	39s
opentelemetry-exporter-otlp-proto-grpc	43s
opentelemetry-exporter-otlp-proto-http	39s
opentelemetry-exporter-prometheus	40s
opentelemetry-exporter-zipkin-combined	39s
opentelemetry-exporter-zipkin-json	37s
opentelemetry-exporter-zipkin-proto-http	42s
opentelemetry-getting-started	55s
opentelemetry-opencensus-shim	38s
opentelemetry-opentracing-shim	38s
opentelemetry-propagator-b3	35s
opentelemetry-propagator-jaeger	35s
opentelemetry-proto-protobuf5	28s
opentelemetry-sdk	41s
opentelemetry-semantic-conventions	32s
opentelemetry-test-utils	35s
	12m 16s

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