installer: generate documentation for configuration #8441
Description
Is your feature request related to a problem? Please describe
Currently, Config is the spec through which users pass configuration into the installer but it isn't
documented. This means users have to check the golang types directly to understand what
all options are even allowed.
Describe the behaviour you'd like
We should be generating the documentation directly from the golang structs. Probably, Having them
as comments and rendering them out into a table in config.md should be good.
Additional context
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