Build native Windows packages for both RDNA4 targets

Add explicit gfx1200/gfx1201 builds, runtime selection and per-target
code objects. Guard staging, packaging and installation against mixed
architectures; retain gfx1201 compatibility and strict K/M arithmetic.

Adapt realdody's target configuration and MSVC binary16/BOOL portability
fixes from ae530b0. Do not import its forced gfx12 layout on RDNA3.
Add exhaustive binary16 and C++/PowerShell target contract regressions.

Validation: 20 CTest gates on RX 9070 XT; four software-only gfx1200 gates;
MSVC portability compile checks; exact 4K K async and M control outputs;
isolated package install/restore and mixed-target rejection tests.
No physical gfx1200 validation is claimed.

Co-authored-by: realdody <[email protected]>

tools/windows/hip_stream_lifecycle_probe.cpp

@@ -9,7 +9,7 @@ int main(int argc, char** argv)
         Args args(argc, argv);
         HipApi hip(args.hip_root);
         hipDeviceProp_t props{};
-        hip.select_gfx1201(args.device, props);
+        hip.select_architecture(args.device, props);
         hipModule_t module = nullptr;
         hipFunction_t kernel = nullptr;
         void* output = nullptr;