Move the ring oscillator noise source to its own library

libraries/Crypto/examples/TestRingOscillatorNoise/TestRingOscillatorNoise.ino

@@ -1,44 +0,0 @@
-
-// This example dumps the raw data from a ring oscillator noise source
-// without any of the whitening normally performed by the RNG class.
-
-#include <Crypto.h>
-#include <RingOscillatorNoiseSource.h>
-
-char const hexchars[] = "0123456789ABCDEF";
-
-class RawNoiseSource : public RingOscillatorNoiseSource
-{
-public:
-    RawNoiseSource() : RingOscillatorNoiseSource() {}
-
-protected:
-    void output(const uint8_t *data, size_t len, unsigned int credit)
-    {
-        for (size_t posn = 0; posn < len; ++posn) {
-            uint8_t value = data[posn];
-            Serial.print(hexchars[(value >> 4) & 0x0F]);
-            Serial.print(hexchars[value & 0x0F]);
-        }
-        Serial.println();
-    }
-};
-
-RawNoiseSource noise;
-bool calibrating = true;
-
-void setup() {
-    Serial.begin(9600);
-    Serial.println();
-    Serial.println("calibrating");
-}
-
-void loop() {
-    noise.stir();
-    bool nowCalibrating = noise.calibrating();
-    if (nowCalibrating != calibrating) {
-        calibrating = nowCalibrating;
-        if (calibrating)
-            Serial.println("calibrating");
-    }
-}