[Emulator] Improvements to launch_data

Added support for autoload titles on boot with:
- Specific launch data
- Specific xex
- Restarting into packages: XamContentLaunchImageFromFileInternal

src/xenia/kernel/xam/xam_module.h

@@ -23,6 +23,8 @@ namespace xam {
 
 bool xeXamIsUIActive();
 
+static const std::string kXamModuleLoaderDataFileName = "launch_data.bin";
+
 class XamModule : public KernelModule {
  public:
   XamModule(Emulator* emulator, KernelState* kernel_state);
@@ -32,11 +34,17 @@ class XamModule : public KernelModule {
 
   struct LoaderData {
     bool launch_data_present = false;
-    std::vector<uint8_t> launch_data;
+    std::string host_path;  // Full host path to next title to load
+    std::string
+        launch_path;  // Full guest path to next xex. might be default.xex
+
     uint32_t launch_flags = 0;
-    std::string launch_path;  // Full path to next xex
+    std::vector<uint8_t> launch_data;
   };
 
+  void LoadLoaderData();
+  void SaveLoaderData();
+
   const LoaderData& loader_data() const { return loader_data_; }
   LoaderData& loader_data() { return loader_data_; }