`root_snippets` is a list of snippets/templates (To be determine) containing configurations for the http server.
`locations` is a dictionnary of location block. `location` (the key of an item) is the location (eg, "/"), `template`is the jinja template defining the contant of the location block. Other variables can be added to the location block depending on the template used.
`locations` is a dictionnary of location block. `location` (the key of an item) is the location (eg, "/"), `template`are the jinja templates defining the contant of the location block. Other variables can be added to the location block depending on the template used.`config` is a string added directly to the config of the location block.
Inside the templates, `server_name` is accessed with `{{ item.key }}`, en variables of the server block with `{{ item.value.varname }}`.