Support streaming in magics

[krassowski]

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Problem

Currently magics do not stream the output. This means that sometimes user waits for a number of seconds (worst case minutes) before receiving feedback.

Proposed Solution

IPython (and Jupyter protocol in general) does support output updates.

Additional context

https://github.com/ipython/ipython/blob/main/examples/IPython%20Kernel/Updating%20Displays.ipynb