touch: rawinput touch to compensate for letterboxing (#790)

## Link to GitHub Issue or related Pull Request, if one exists

Fixes #697

## Description of change

Adds aspect-ratio compensation for raw input touch handler.

This addresses the problem with playing rawinput touch games - namely
jubeat and reflec beat - on a display that is not 16:9, and user chose
to preserve the aspect ratio. This happens a lot on:

* 16:10 touch screens
* touch screen laptops (which range from 3:2, 16:10, and so on).

Root cause is a **Windows Raw Input limitation**. Unlike
`WM_POINTER`/`WM_TOUCH`, where the OS already maps digitizer coordinates
to screen space (applying the display's calibration/scaling), Raw Input
delivers the HID digitizer's *raw* logical coordinates, spanning the
whole physical panel, with **no calibration or display-mapping data
attached**. We have to reconstruct that mapping ourselves.

When a game runs at a display mode whose aspect ratio differs from the
panel's native resolution, Windows scales the image with
letterboxing/pillarboxing (black bars). That is standard OS/GPU
behavior. Because Raw Input gives us no mapping to account for those
bars, touches land off-target. This change detects the mismatch and
remaps each touch from panel-space into the displayed image region;
touches inside the black bars are treated as released.

Adds new launcher option **`-rawtouchaspect`**.

Notes:

- Native resolution is the largest-area mode from `EnumDisplaySettings`
on the **primary** display, consistent with the existing primary-only
touch pipeline.
- Math assumes centered, aspect-preserving scaling; only one axis is
ever inset.
- A small epsilon (0.01) makes near-matched panels (e.g. 1366×768 vs
true 16:9) a no-op.
- If the user forces a stretched image, then the touches will be off
again. In this case, the user needs to use the `force off` setting.

## Testing

On my tiny Surface Go tablet, 
* checked that jubeat squares align correctly
* good enough to full combo level 11 for reflec beat

src/spice2x/games/jb/jb.cpp

@@ -7,6 +7,7 @@
 #include "cfg/configurator.h"
 #include "hooks/graphics/graphics.h"
 #include "touch/touch.h"
+#include "rawinput/touch.h"
 #include "util/logging.h"
 #include "util/utils.h"
 #include "util/detour.h"
@@ -57,6 +58,9 @@ namespace games::jb {
             log_info("jubeat", "using window handle for touch: {}", fmt::ptr(wnd));
             touch_create_wnd(wnd, true);
 
+            // request automatic aspect ratio fixes
+            ::rawinput::touch::ASPECT_COMPENSATION_GAME = true;
+
             // show cursor
             if (GRAPHICS_SHOW_CURSOR) {
                 ShowCursor(TRUE);

src/spice2x/games/rb/touch.cpp

@@ -4,6 +4,7 @@
 
 #include "avs/game.h"
 #include "hooks/graphics/graphics.h"
+#include "rawinput/touch.h"
 #include "touch/touch.h"
 #include "util/logging.h"
 #include "util/time.h"
@@ -80,6 +81,10 @@ bool games::rb::ReflecBeatTouchDeviceHandle::open(LPCWSTR lpFileName) {
             // show game window because it lost focus
             ShowWindow(wnd, SW_SHOW);
         }
+
+        // request automatic aspect ratio fixes
+        ::rawinput::touch::ASPECT_COMPENSATION_GAME = true;
+
     } else {
 
         // fallback to dx hook