feat ✨: Added new header files AudioLevelTracker.h, Config.h, I2SConfig.h, and updated Arduino code for improved I2S communication and dynamic range limiting.

- Added a new header file `AudioLevelTracker.h` to track audio levels with a history of up to 3 seconds and a maximum range limit.
- `Config.h` has been added with new serial and I2S configurations. The aim is to configure these peripherals for audio processing.
- Added new header file `I2SConfig.h` with setup functions for initializing and reading from I2S interface.
- The `AudioLevelTracker.cpp` file has been updated to include functionality for tracking the maximum audio level over a specified duration.
- Initial setup for I2S communication with a microphone.
- Updated `Arduino` code with improved I2S configuration and dynamic range limiting.

src/I2SConfig.cpp

@@ -0,0 +1,34 @@
+#include "I2SConfig.h"
+
+void initI2S() {
+    // I2S configuration
+    i2s_config_t i2s_config = {
+        .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX),
+        .sample_rate = Config::SAMPLE_RATE,
+        .bits_per_sample = I2S_BITS_PER_SAMPLE_32BIT,
+        .channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
+        .communication_format = I2S_COMM_FORMAT_STAND_I2S,
+        .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
+        .dma_buf_count = 4,
+        .dma_buf_len = 1024,
+        .use_apll = false,
+        .tx_desc_auto_clear = false,
+        .fixed_mclk = 0
+    };
+
+    // I2S pin configuration
+    i2s_pin_config_t i2s_mic_pins = {
+        .bck_io_num = Config::I2S_MIC_SERIAL_CLOCK,
+        .ws_io_num = Config::I2S_MIC_LEFT_RIGHT_CLOCK,
+        .data_out_num = I2S_PIN_NO_CHANGE,
+        .data_in_num = Config::I2S_MIC_SERIAL_DATA
+    };
+
+    // Install and configure I2S driver
+    i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL);
+    i2s_set_pin(I2S_NUM_0, &i2s_mic_pins);
+}
+
+void readI2SSamples(int32_t* samples, size_t* bytesRead) {
+    i2s_read(I2S_NUM_0, samples, Config::SAMPLE_BUFFER_SIZE * sizeof(int32_t), bytesRead, portMAX_DELAY);
+}