We might already have issues open for this request but I couldn't find that yet.

Notes:

• Feature will be behind an experiment
• Experiment will be rolled out to all insiders
• We will need to ensure completion requests to the kernel complete quickly, so as to prevent slowing down the kernel
• Python kernel completion cannot be disabled (it is on by default)
• Python kernel completion does not support displaying documentation (resolveCompletionItem not implemeneted)
• Kernel completions will be enabled by default
• Configurable non-python kernel completion trigger characters
• Setting to run off non-python kernel completions
• Merge Python and non-python kernel completions into the same settings (turn off and trigger characters)
  This will need to be done after the experiment, once were comfortable enabling this new feature (non-python kernels) for all
• Leave experiment for at least 2 months.