The content here is an Antora component for the ec CLI. The YAML files
within the dist/cli-reference directory are generated by running make reference-docs
which generates those based on the data structures of the Cobracobra library used
for the command line argument parsing.
The template directory is used by the reference-antora-extension to
transform those YAML files into Asciidoc and is in Handlebars syntax, the
modules/ROOT/nav.adoc is also parsed and evaluated as a Handlebars template.