Move Peeek::Hook.any_instance? and Peeek::Hook.any_module? to Peeek::Hook::Verdict module
Test Peeek::Hook::Linker
Test Peeek::Hook::Verdict
Test Peeek::Hook::Instance
Fix documentation comment
Fix how to define method
Remove Peeek::Hook::Verdict
Test Peeek::Hook::Singleton