configuration_location

An optional `.reqlan/config.json` may appear under a base's `.reqlan` directory.
For a given `.rq` file, the applying base is the nearest ancestor directory that owns a `.reqlan` folder.
The applying config is that base's `.reqlan/config.json` when present.
If the owning base has no `config.json`, or no owning base is found, defaults from configuration_import_roots apply.
A child base does not inherit a parent base's config.
Implemented by reqlan-path-resolve.ts.

Interactive page: configuration_location