Add the data file and the reader/writer method to load pattern

new file:   Makefile.PatternReader
new file:   PatternReader.cpp
new file:   PatternReader.h
new file:   data.pic
Fetch the pattern with PatternReader.cpp
fix an audio issue related to cpu hog
all audio output are put to a file and to the RtAudio

-#define BUFFER_FRAME 512
+#define BUFFER_FRAME 8192
Really dirty audiomixer with two input

+  Sint32 sint32tick=(T0.tick()/2)+(T1.tick()/2);
fix related to cpu hog.
don't really know if it is necessary.
I push it because it works as is.
Now I now each frequency is related to each note :
440Hz => C4
Handling two audio input dirty mixer
push it but not necessary
some debug info, not necessary
Now it has a getSize() method with is more compliant to conding syle
getSize() function
Add the PatternReader to the source