Add missing return type annotations to LogRecordProcessor and LoggerProvider#5008

lzchen merged 2 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-python:mainfrom

joshwilhelmi:fix/logs-shutdown-type-annotationsjoshwilhelmi/opentelemetry-python:fix/logs-shutdown-type-annotationsCopy head branch name to clipboard