I found this for you: https://rstudio.com/resources/rstudioconf-2020/mlops-for-r-with-azure-machine-learning/
In the video David is talking about Devops for R at 10:58. Why dont you ping David on Twitter to inquire more about it? If Microsoft is not able to support it officially I think you can build your own pipelines deploying models within AKS and using Azure storage with Azure Functions for pushing data to the model and pulling out forcasts.
Hope this helps.