HPC Cache new namespace page and region expansion

A new Microsoft [Azure HPC Cache](https://azure.microsoft.com/en-us/services/hpc-cache/) namespace page makes it easier than ever to add and manage the client-facing file paths. From a single page, you can now set the client-facing paths for all storage targets, visualize the entire aggregated namespace, and administer changes. By consolidating namespace processes and details, this new page provides a seamless experience without any confusing or time-consuming page toggling. Azure HPC Cache is also now available in available in West US and UK South. Learn more about the namespace for Azure HPC Cache in our [documentation](https://docs.microsoft.com/en-us/azure/hpc-cache/add-namespace-paths?tabs=azure-portal) or [this blog post](https://techcommunity.microsoft.com/t5/azure-storage/introducing-the-new-azure-hpc-cache-namespace-page/ba-p/1729819). * Azure HPC Cache * Features * Regions & Datacenters * [ Azure HPC Cache](https://azure.microsoft.com/en-gb/products/hpc-cache/)