[FS/Memory] Add ENVINFO and some FS calls for Metroid 2

include/kernel/config_mem.hpp

@@ -6,6 +6,7 @@ namespace ConfigMem {
 	enum : u32 {
 		KernelVersionMinor = 0x1FF80002,
 		KernelVersionMajor = 0x1FF80003,
+		EnvInfo = 0x1FF80014,
 		AppMemAlloc = 0x1FF80040,
 		Datetime0 = 0x1FF81020,
 		LedState3D = 0x1FF81084

include/memory.hpp

@@ -124,6 +124,10 @@ class Memory {
 	std::optional<u32> findPaddr(u32 size);
 	u64 timeSince3DSEpoch();
 
+	// https://www.3dbrew.org/wiki/Configuration_Memory#ENVINFO
+	// Report a retail unit without JTAG
+	static constexpr u32 envInfo = 1;
+
 public:
 	u16 kernelVersion = 0;
 	u32 usedUserMemory = 0;

include/services/fs.hpp

@@ -28,10 +28,16 @@ class FSService {
 
 	// Service commands
 	void closeArchive(u32 messagePointer);
+	void getPriority(u32 messagePointer);
 	void initialize(u32 messagePointer);
+	void initializeWithSdkVersion(u32 messagePointer);
 	void openArchive(u32 messagePointer);
 	void openFile(u32 messagePointer);
 	void openFileDirectly(u32 messagePointer);
+	void setPriority(u32 messagePointer);
+
+	// Used for set/get priority: Not sure what sort of priority this is referring to
+	u32 priority;
 
 public:
 	FSService(Memory& mem, Kernel& kernel) : mem(mem), saveData(mem), sdmc(mem), selfNcch(mem), kernel(kernel) {}