Support bypassing resilience checks for package decls at use site in a package.

By default package decls are treated as resilient, similar to public (non-frozen).
This PR adds support to allow direct access to package decls at use site if opted-in.
Requires the loaded module to be a binary module in the same package.

Resolves rdar://121626315

lib/Frontend/CompilerInvocation.cpp

@@ -671,6 +671,8 @@ static bool ParseLangArgs(LangOptions &Opts, ArgList &Args,
   Opts.EnablePackageInterfaceLoad = Args.hasArg(OPT_experimental_package_interface_load) ||
                                     ::getenv("SWIFT_ENABLE_PACKAGE_INTERFACE_LOAD");
 
+  Opts.EnableBypassResilienceInPackage = Args.hasArg(OPT_package_bypass_resilience_optimization);
+
   Opts.DisableAvailabilityChecking |=
       Args.hasArg(OPT_disable_availability_checking);
   if (Args.hasArg(OPT_check_api_availability_only))