Add file chunk uploading for Azure Blob Storage Integration

[bdstout]

Is your feature request related to a problem? Please describe.
Uploading large files (>50MB) to blob storage fails.

Describe the solution you'd like
Use file chunking in the Azure client.py:

block_list=[]
chunk_size=1024*1024*4

with open(local_html_file_path, "rb") as data:
    while True:
        read_data = data.read(chunk_size)

        if not read_data:
            break # done

        blk_id = str(uuid.uuid4())
        blob_handle.stage_block(block_id=blk_id,data=read_data) 
        block_list.append(BlobBlock(block_id=blk_id))

blob_handle.commit_block_list(block_list)

I have tested the above by updating the client.py locally. The code above needs review and some love (removing the while true would be first on the list). <3

Describe alternatives you've considered
The only alternative I've considered is performing the upload outside of elementary.

Additional context
Nope.

Would you be willing to contribute this feature?
I would, if I had time. I'll leave it in your capable hands.

[haritamar]

Hi @bdstout ,
Thanks for opening this issue and apologies for the late reply!
This makes a lot of sense, however due to a significant backlog I don't believe the Elementary team will be able to get to it in the near future, so I'm adding the "Open to Contribution" label.

If you are willing to add as a contribution I will love to provide further guidance.

Thanks,
Itamar