fix: refactor code structure into files (#8)

closes #7

Co-authored-by: HiveBeats <e1lama@protonmail.com>
Reviewed-on: #8

oscillator.h

@@ -0,0 +1,33 @@
+#ifndef OSCILLATOR_H
+#define OSCILLATOR_H
+
+#include "utils.h"
+
+typedef enum {
+    Sine,
+    Triangle,
+    Saw,
+    Square
+} OscillatorType;
+
+typedef struct OscillatorParameter {
+    OscillatorType osc;
+    float freq;
+} OscillatorParameter;
+
+typedef struct OscillatorParameterList {
+    OscillatorParameter* array;
+    size_t count;
+} OscillatorParameterList;
+
+typedef struct OscillatorGenerationParameter {
+    OscillatorParameterList oscillators;
+    float sample;
+} OscillatorGenerationParameter;
+
+float multiosc(OscillatorGenerationParameter param);
+SynthSound freq(float duration, OscillatorParameterList osc);
+
+
+
+#endif