[Config] - Please add new Service to tf-provider

[uli-schneider]

Description of the enhancement

Add the new function "Config" to terraform provider. ReleaseNote: https://www.open-telekom-cloud.com/en/support/release-notes/rms-becomes-config

Documentation (UMN and API) is available. https://docs.otc.t-systems.com/config/index.html

Thanks!

[artem-lifshits]

@uli-schneider new resources and data sources available in new release.