Add functionality to the "d8 system module"

[VaLosev]

Suggestions for the d8 system module

Add a flag to d8 system module list so that all modules can be viewed, similar to d8 k get modules.

Currently, commands only list enabled modules via the curl http://127.0.0.1:9652/module/list.yaml endpoint.

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Add autocomplete for module names to d8 system module enable/disable.