Update blob storage handler

[Ben-Carpenter]

Why

• Update BlobStorageHandler to match Create and submit a product for signing official documentation from Hardware Dashboard API.

• Add and update packages

• General code cleanup and formatting

• Update AuthorizationHandlerCredentials and AuthorizationHandler

• Add check for token to prevent call from being made if no token exists.

What Changed

BlobStorageHandler

• Use of File.OpenRead(filePath)
• Update UploadAsync()

AuthorizationHandler

• Add option for x509Certificate2
• Add CredentialUnavailableException if an AccessToken is not available.