both iOS and Android are having trouble with the current method
of loading the entire file to memory, encrypting it, and sending
to azure in one go.
We will need to come up with a chunking scheme to support
larger files in the future
* Update Size limits
* Add new Api paths for direct upload of Cipher Attachments
* Add Attachment upload to fileUploadService
* Save with direct upload and fallback to legacy uplaod
CipherID is required for direct upload to request an upload URL
* Inform on when to remove legacy code
* Test Attachment upload