code: function createCoreRuleConfigs() {
      return Object.keys(builtInRules).reduce((accumulator, id) => {
          const rule = rules.get(id);
          const schema = (typeof rule === "function") ? rule.schema : rule.meta.schema;
  
          accumulator[id] = generateConfigsFromSchema(schema);
          return accumulator;
      }, {});
  }
docs: Generate possible rule configurations for all of the core rules
  @returns {rulesConfig} Hash of rule names and arrays of possible configurations