qt/main: Register Qt Software Keyboard frontend with AM

Allows using Qt provider over default.

src/core/frontend/applets/software_keyboard.cpp

@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include "common/logging/backend.h"
+#include "common/string_util.h"
 #include "core/frontend/applets/software_keyboard.h"
 
 namespace Frontend {

src/yuzu/applets/software_keyboard.cpp

@@ -9,6 +9,7 @@
 #include <QLineEdit>
 #include <QVBoxLayout>
 #include "common/logging/backend.h"
+#include "common/string_util.h"
 #include "yuzu/applets/software_keyboard.h"
 
 QtSoftwareKeyboardValidator::QtSoftwareKeyboardValidator(

src/yuzu/main.cpp

@@ -8,9 +8,11 @@
 #include <thread>
 
 // VFS includes must be before glad as they will conflict with Windows file api, which uses defines.
+#include "applets/software_keyboard.h"
 #include "core/file_sys/vfs.h"
 #include "core/file_sys/vfs_real.h"
 #include "core/hle/service/acc/profile_manager.h"
+#include "core/hle/service/am/applets/applets.h"
 
 // These are wrappers to avoid the calls to CreateDirectory and CreateFile because of the Windows
 // defines.
@@ -559,6 +561,8 @@ bool GMainWindow::LoadROM(const QString& filename) {
 
     system.SetGPUDebugContext(debug_context);
 
+    Service::AM::Applets::RegisterSoftwareKeyboard(std::make_shared<QtSoftwareKeyboard>(*this));
+
     const Core::System::ResultStatus result{system.Load(*render_window, filename.toStdString())};
 
     const auto drd_callout =