nost: move nostalgia from wintouchemu to native touch hook (#827)

## Link to GitHub Issue or related Pull Request, if one exists
#814

## Description of change
Switch over Nostalgia from wintouchemu to native touch hook.

Nostalgia has some strict timing requirements (touches must be updated
on every acio poll) so this takes a slightly different path to maintain
mouse holds.

Only a handful of consumers of wintouchemu remain:

1. beatstream - but it's off by default, only enabled as errata for
buggy touchscreens, or if the user forces it on (for Show Cursor)
2. gitadora single-window overlay - this is just for mouse so not a big
deal.
3. MFC HG mode - not a priority to fix.

## Testing
Tested full screen and windowed mode with touch / mouse / poke.

src/spice2x/touch/native/nativetouchhook.h

@@ -2,6 +2,7 @@
 
 namespace nativetouch {
     void hook(HMODULE module);
+    void refresh_contact_lifetime();
 
     // true once hook() has installed the native touch stack for the current game;
     // such games consume touch through the GetTouchInputInfo hook rather than spicetouch