Show the list of voila kernels in the running tabs

[jtpio]

EDIT: this branch depends on #41. The relevant changes for this current PR are the ones under packages/jupyterlab-voila/*.

Motivation

Having such list can be useful to get an idea of the number of kernels that are currently running.

It should also help troubleshoot issues such as #479, #528, #562.

TODO

• Add a new section to the running tabs
• Filter the list of kernels to only show the ones started by Voila (for now it lists all the kernels)

[jtpio]

Just rebased this PR onto #41 so it can use the GET /voila/api/kernels endpoint to list the voila kernels kernels only.

[jtpio]

The relevant change for this PR is in 568d7a0 (might be updated on subsequent rebases)

[jtpio]

This might actually be fixed in JupyterLab directly: jupyterlab/jupyterlab#13792.

[afshin]

This might actually be fixed in JupyterLab directly: jupyterlab/jupyterlab#13792.

As long as api/kernels returns the kernels in question, then yes!

[jtpio]

Just checked with jupyterlab==4.0.0a35 and voila==0.5.0a2 and the kernels appear to be listed in the running panel:

Closing as fixed by jupyterlab/jupyterlab#13792, thanks @afshin!