opentelemetry-instrumentation-dbapi: Add Database client operation duration and returned rows metrics (#4481)

* opentelemetry-instrumentation-dbapi: Add Database client operation duration and returned rows metrics

* update CHANGELOG.md

* add changelog fragment

* Update changelog for opentelemetry-instrumentation-dbapi

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Co-authored-by: Mike Goldsmith <goldsmith.mike@gmail.com>
Co-authored-by: Tammy Baylis <96076570+tammy-baylis-swi@users.noreply.github.com>
Co-authored-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>