Add an Azure Blob Storage backend to Arctic

Add an Azure Blob Storage backend to Arctic: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). Add an Azure Blob Storage backend to Arctic Arctic can currently be pointed at S3 (s3:// / s3s://) and LMDB (lmdb://) backends. We want to add Azure Blob Storage as a first-class…