refactor(package-rules): move to class based implementation (#16865)

lib/util/package-rules.ts

lib/util/package-rules/base-branches.ts

lib/util/package-rules/base.ts

lib/util/package-rules/current-version.spec.ts

lib/util/package-rules/current-version.ts

lib/util/package-rules/datasources.ts

lib/util/package-rules/dep-types.ts

lib/util/package-rules/files.spec.ts

lib/util/package-rules/files.ts

lib/util/package-rules/index.spec.ts

lib/util/package-rules/index.ts

lib/util/package-rules/languages.ts

lib/util/package-rules/managers.ts

lib/util/package-rules/matchers.ts

lib/util/package-rules/package-names.spec.ts

lib/util/package-rules/package-names.ts

lib/util/package-rules/package-patterns.spec.ts

lib/util/package-rules/package-patterns.ts

lib/util/package-rules/package-prefixes.spec.ts

lib/util/package-rules/package-prefixes.ts