[Applets] Properly expose nextParameter

include/applets/applet.hpp

@@ -72,7 +72,9 @@ namespace Applets {
 	};
 
 	class AppletBase {
+	  protected:
 		Memory& mem;
+		std::optional<Parameter>& nextParameter;
 
 	  public:
 		virtual const char* name() = 0;
@@ -83,6 +85,6 @@ namespace Applets {
 		virtual Result::HorizonResult receiveParameter() = 0;
 		virtual void reset() = 0;
 
-		AppletBase(Memory& mem) : mem(mem) {}
+		AppletBase(Memory& mem, std::optional<Parameter>& nextParam) : mem(mem), nextParameter(nextParam) {}
 	};
 }  // namespace Applets

include/applets/mii_selector.hpp

@@ -8,6 +8,6 @@ namespace Applets {
 		virtual Result::HorizonResult receiveParameter() override;
 		virtual void reset() override;
 
-		MiiSelectorApplet(Memory& memory) : AppletBase(memory) {}
+		MiiSelectorApplet(Memory& memory, std::optional<Parameter>& nextParam) : AppletBase(memory, nextParam) {}
 	};
 }  // namespace Applets

include/applets/software_keyboard.hpp

@@ -8,6 +8,6 @@ namespace Applets {
 		virtual Result::HorizonResult receiveParameter() override;
 		virtual void reset() override;
 
-		SoftwareKeyboardApplet(Memory& memory) : AppletBase(memory) {}
+		SoftwareKeyboardApplet(Memory& memory, std::optional<Parameter>& nextParam) : AppletBase(memory, nextParam) {}
 	};
 }  // namespace Applets

src/core/applets/applet_manager.cpp

@@ -4,7 +4,7 @@
 
 using namespace Applets;
 
-AppletManager::AppletManager(Memory& mem) : miiSelector(mem), swkbd(mem) {}
+AppletManager::AppletManager(Memory& mem) : miiSelector(mem, nextParameter), swkbd(mem, nextParameter) {}
 
 void AppletManager::reset() {
 	miiSelector.reset();

src/core/applets/software_keyboard.cpp

@@ -7,5 +7,14 @@ Result::HorizonResult SoftwareKeyboardApplet::start() { return Result::Success;
 
 Result::HorizonResult SoftwareKeyboardApplet::receiveParameter() {
 	Helpers::warn("Software keyboard: Unimplemented ReceiveParameter");
+
+	Applets::Parameter param = Applets::Parameter{
+		.senderID = AppletIDs::SoftwareKeyboard,
+		.destID = AppletIDs::Application,
+		.signal = APTSignal::Response,
+		.data = {},
+	};
+
+	nextParameter = param;
 	return Result::Success;
 }