Add a pattern-matching support for allow and block list in Datadog metric

[rawwar]

Description

Currently, when exporting metrics to Datadog, we only do plain prefix matches for the allow list and block list. I am requesting to include regex pattern-matching

Use case/motivation

We are already supporting this for OTEL #36250. Adding this to Datadog will help to maintain a reduced number of patterns required in the allow/block list

Related issues

No response

Are you willing to submit a PR?

• [X] Yes I am willing to submit a PR!

Code of Conduct

• [X] I agree to follow this project's Code of Conduct