Imports of package maintester

PathSynopsis
github.com/tetratelabs/wazero/internal/testing/requirePackage require includes test assertions that fail the test immediately.
osPackage os provides a platform-independent interface to operating system functionality.
pathPackage path implements utility routines for manipulating slash-separated paths.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
testingPackage testing provides support for automated testing of Go packages.