Refactor Azure Blob Storage client initialization and add cleanup functionality for Azure Blob objects

Author: KoblerS

lib/azure-blob-storage.js

@@ -58,7 +58,7 @@ module.exports = class AzureAttachmentsService extends require("./basic") {
       })
 
       this.containerName = creds.container_name
-      this.blobServiceClient = new BlobServiceClient(creds.container_uri + "?" + creds.sas_token)
+      this.blobServiceClient = new BlobServiceClient(`${creds.container_uri}?${creds.sas_token}`)
       this.containerClient = this.blobServiceClient.getContainerClient(creds.container_name)
 
       logConfig.info('Azure Blob Storage client initialized successfully', {