Breaking: don't export getRecommendedConfig()

\### Rationale
Don't export more than is necessary. This function is not used anywhere
else and doesn't have the intention to.

Breaking change since it removes an external interface another package
might rely on.

lib/index.ts

@@ -5,7 +5,7 @@
 import type { Linter } from "eslint";
 import rulebook from "./rules";
 
-export const generateRecommendedConfig = (): Partial<Linter.RulesRecord> => {
+const generateRecommendedConfig = (): Partial<Linter.RulesRecord> => {
     return Object.entries(rulebook.rules).reduce((memo, [name, rule]) => {
         return !rule.meta.docs
             ? memo