[refactor]: c++ implementation (#13)

implemented in c++ to improve readability and simplify maintenance

Co-authored-by: HiveBeats <e1lama@protonmail.com>
Reviewed-on: #13

inc/Application.h

@@ -0,0 +1,32 @@
+#pragma once
+#include "Note.h"
+#include "Synth.h"
+#include "raylib.h"
+#include "RingBuffer.h"
+#include "Renderer.h"
+#include "SynthGuiState.h"
+
+class Application
+{
+private:
+    Synth m_synth;
+    SynthGuiState m_synth_gui_state;
+    RingBuffer<float>* m_ring_buffer;
+    AudioStream m_synth_stream;
+    int m_sound_played_count;
+    float* m_temp_buffer;
+    Note* m_current_note;
+    Renderer m_renderer;
+    std::size_t detect_note_pressed(Note* note);
+    void init_synth();
+    void init_audio();
+    void update_on_note_input();
+    void play_buffered_audio();
+    void fill_audio_buffer();
+
+public:
+    Application(/* args */);
+    ~Application();
+    void Run();
+};
+