docs:monitor: Configuration content outline

Fill in the fan monitor JSON configuration content and add syntax
detail markdown files for each attribute available. Each attribute's
syntax markdown file will be completed in follow-up commits to provide
further details on the attribute within the configuration.

Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
Change-Id: Ibe97080c8b993c67c54af9989e775191607314b7
13 files changed