Copy JKernel (#126)

* start JSystem

* JKRAram and JUTGamePad

* started heap and thread

* more JKernel

* mostly finished JKernel

* delete unused asm

* JKRFileFinder

* delete unused asm and match findNextFile

* format

* fix mtx_vec

include/JSystem/JSupport/JSUInputStream.h

@@ -1,6 +1,22 @@
 #ifndef JSUINPUTSTREAM_H
 #define JSUINPUTSTREAM_H
 
+#include "JSystem/JSupport/JSUIosBase.h"
 #include "dolphin/types.h"
 
+struct JSUStreamSeekFrom {};
+
+class JSUInputStream : public JSUIosBase {
+public:
+    JSUInputStream();
+    virtual ~JSUInputStream();
+
+    /* vt[3] */ virtual s32 getAvailable() const = 0;
+    /* vt[4] */ virtual s32 skip(s32);
+    /* vt[5] */ virtual s32 readData(void*, s32) = 0;
+
+    // TODO: return value probably wrong
+    /* 802DC298 */ void read(void*, s32);
+};
+
 #endif /* JSUINPUTSTREAM_H */