[FeatureRequest] Only use MO - convert model to IR format (xml/bin)

[Erol444]

Start with why

Our depthai-model-zoo (DMZ) requires models to be in IR format (xml/bin), so blobconverter can compile the model for a different number of shave cores. So if you want to upload a model to DMZ, you need to install openvino locally.

Move to What

Add an option to blobconverter (webapp) to use download_ir argument and download IR (bin/xml) along with the blob. This is already supported by the CLI/python package/backend, so it just needs to be added to the frontend.