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/JSUFileStream.h

@@ -1,6 +1,21 @@
 #ifndef JSUFILESTREAM_H
 #define JSUFILESTREAM_H
 
+#include "JSystem/JSupport/JSURandomInputStream.h"
 #include "dolphin/types.h"
 
+struct JKRFile;
+
+class JSUFileInputStream : public JSURandomInputStream {
+public:
+    virtual ~JSUFileInputStream();
+
+    // TODO: fix return values
+    /* 802DC638 */ JSUFileInputStream(JKRFile*);
+    /* 802DC67C */ s32 readData(void*, s32);
+    /* 802DC74C */ void seekPos(s32, JSUStreamSeekFrom);
+    /* 802DC82C */ s32 getLength() const;
+    /* 802DC85C */ s32 getPosition() const;
+};
+
 #endif /* JSUFILESTREAM_H */