(Beta) Add support for append only blobs with azure driver

If using matthewbdaly/laravel-azure-storage as a storage driver, we now use azure's append only blobs for much better upload performance when using chunking.

Breaking changes

When using this driver, you have to update your filepond config to include the Content-Type when initializing a chunked file upload and enable chunkForce:

FilePond.setOptions({
  chunkForce: true, // <-- add this
  server: {
    url: "/filepond/api",
    process: {
      url: "/process",
      headers: (file: File) => {
        // Send the original file name which will be used for chunked uploads
        return {
          "Upload-Name": file.name,
          "X-CSRF-TOKEN": "{{ csrf_token() }}",
          "Content-Type": file.type, // <-- add this
        };
      },
    },
    revert: "/process",
    patch: "?patch=",
    headers: {
      "X-CSRF-TOKEN": "{{ csrf_token() }}",
    },
  },
});