Added datadog sponsorship notice (#58)

Author: goruha

README.md

@@ -8,6 +8,23 @@ description: |-
 
   See Datadog's [documentation about provisioning keys](https://docs.datadoghq.com/account_management/api-app-keys) for
   more information.
+
+  ## Sponsorship
+
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="https://cloudposse.com/images/partners/datadog-white.svg">
+    <source media="(prefers-color-scheme: light)" srcset="https://cloudposse.com/images/partners/datadog-purple.svg">
+    <img alt="Datadog" src="https://cloudposse.com/images/partners/datadog-purple.svg" align="right" width="40%">
+  </picture>
+
+
+  This project is supported by the [Datadog Open Source Program](https://www.datadoghq.com/partner/open-source/).
+
+  As part of this collaboration, Datadog provides a dedicated sandbox account that we use for automated integration and acceptance testing. This contribution allows us to continuously validate changes against a real Datadog environment, improving reliability and reducing the risk of regressions.
+
+  We are grateful to Datadog for supporting our open source ecosystem and helping ensure that infrastructure code for Terraform remains stable and well-tested
+  ___
+
 usage: |-
   **Stack Level**: Global