Automatically load lint configurations based on imported packages

[ajafff]

microsoft/TypeScript#15589 (comment) presented the idea to introduce a concept similar to DefinitelyTyped but for lint rules/configurations. That means libraries can provide a lint configuration that is automatically picked up when importing that library. There should also be a community project that maintains lint configurations for libraries that don't ship a config file.

When importing a package:

• looks up wotanrc property in package.json of the imported package which is expected to point to a file containing a linter config
• looks up .wotanrc.* file in the root directory of the imported package
• looks up package @<TBD>/<packageName>

If a file is found, it is used as configuration file for the currently linted file. TBD: should it override the user-provided config or is it unshifted to the array of base configs?

TBD:

• property name in package.json
• expected file name in root directory of imported package
• name of scope for custom configurations
• precedence of config files