v0.1.1 of kareki

A multi-package dead code detector for Dart and Flutter monorepos. Finds unused public APIs, files, and pub dependencies across Melos / pub workspaces. Changelog excerpt: ### Added - New rule test_only_used: flags public declarations under lib/that are only reachable from test entry points (*_test.dart, test/, integration_test/). Detects the "code that exists only because its tests exist" anti-pattern that the standard reachability analysis misses because test files are themselves entry points. - EntryPointSetnow exposes productionRootNames/ testRootNamesfor callers that need to distinguish production vs test consumption. - `ReachabilityBfs.compu[...]