chore: rename registry to provider (#749)
chore: rename registry to provider (#749)

* chore: rename registry to provider

* chore: revert changelog modification

* chore: remove examples and getting started from rename

open-telemetry/opentelemetry-js-contrib,open-telemetry/opentelemetry-js-contrib,open-telemetry/opentelemetry-js-contrib,open-telemetry/opentelemetry-js-contrib