Add swkbd applet

include/applets/software_keyboard.hpp

@@ -0,0 +1,13 @@
+#include "applets/applet.hpp"
+
+namespace Applets {
+	class SoftwareKeyboardApplet final : public AppletBase {
+	  public:
+		virtual const char* name() override { return "Software Keyboard"; }
+		virtual Result::HorizonResult start() override;
+		virtual Result::HorizonResult receiveParameter() override;
+		virtual void reset() override;
+
+		SoftwareKeyboardApplet(Memory& memory) : AppletBase(memory) {}
+	};
+}  // namespace Applets