Add controller support and safe main menu hooks

Enable gamepad navigation for the PrismaUI server browser and install MainMenu input hooks safely. Poll XInput each game-thread tick and forward button/stick changes to the browser (ForwardButtonEvent / ForwardThumbstickEvent), allocate an input-enable layer to suppress vanilla kMenu events while the browser is open, and register polling via the F4SE task interface. Replace direct vtable writes that caused a loading-screen crash with REL::Relocation::write_vfunc on the MainMenu BSInputEventUser secondary vtable and install OnButton/OnThumbstick hooks once at plugin Install(). Add MainMenu API to suppress inputEventHandling and call it when showing/hiding the browser. Also update PrismaUI browser JS to support controller focus for direct-connect, filter activation/cycling, improved controller prompts, and add CSS for focused direct-connect fields. Files touched include plugin/src/F4TMenuInput.cpp, plugin/src/F4TMainMenuInject.cpp, plugin/include headers, PrismaUI view JS/components, styles, and documentation.

plugin/include/F4TMainMenuInject.h

@@ -8,5 +8,6 @@ namespace RE
 namespace F4T::MainMenuInject
 {
 	bool IsMainMenuOnMainPanel(const RE::UI* a_ui);
+	void SetMainMenuInputSuppressed(bool a_suppressed);
 	void Install();
 }

plugin/include/F4TMenuInput.h

@@ -1,7 +1,15 @@
 #pragma once
 
+namespace RE
+{
+	class ButtonEvent;
+	class ThumbstickEvent;
+}
+
 namespace F4T::MenuInput
 {
 	void Register();
 	void SetBrowserActive(bool a_active);
+	bool ForwardButtonEvent(const RE::ButtonEvent* a_event);
+	bool ForwardThumbstickEvent(const RE::ThumbstickEvent* a_event);
 }