configure_input_player: Implement input exclusivity and persistence

With this, the "Input Devices" combobox should accurately reflect the input device being used and disallows inputs from other input devices unless the input device is set to "Any".

src/input_common/main.cpp

@@ -78,7 +78,7 @@ struct InputSubsystem::Impl {
     [[nodiscard]] std::vector<Common::ParamPackage> GetInputDevices() const {
         std::vector<Common::ParamPackage> devices = {
             Common::ParamPackage{{"display", "Any"}, {"class", "any"}},
-            Common::ParamPackage{{"display", "Keyboard/Mouse"}, {"class", "key"}},
+            Common::ParamPackage{{"display", "Keyboard/Mouse"}, {"class", "keyboard"}},
         };
 #ifdef HAVE_SDL2
         auto sdl_devices = sdl->GetInputDevices();
@@ -96,7 +96,7 @@ struct InputSubsystem::Impl {
         if (!params.Has("class") || params.Get("class", "") == "any") {
             return {};
         }
-        if (params.Get("class", "") == "key") {
+        if (params.Get("class", "") == "keyboard") {
             // TODO consider returning the SDL key codes for the default keybindings
             return {};
         }
@@ -116,7 +116,7 @@ struct InputSubsystem::Impl {
         if (!params.Has("class") || params.Get("class", "") == "any") {
             return {};
         }
-        if (params.Get("class", "") == "key") {
+        if (params.Get("class", "") == "keyboard") {
             // TODO consider returning the SDL key codes for the default keybindings
             return {};
         }