This directory contains a script (a Go command) that generates the struct needed to unmarshal the Agent Options' `options` values that the current version of osquery supports. It extracts this information from `osqueryd --help` to identify which osquery command-line flags can be set via the options and which are only for the command-line (i.e. require a restart), and running a query in `osqueryi` to get the data type of those options.
It prints the resulting Go code to stdout (the `osqueryOptions` and the `osqueryCommandLineFlags` structs), you can just copy it and insert it in the proper location in the source code to replace the existing struct (in `server/fleet/agent_options.go`).