Initial setup: added src structure, input functionality, tests, and updated .gitignore

src/input/file_reader.py

@@ -0,0 +1,21 @@
+import os
+import librosa
+
+def read_audio(file_path):
+    """
+    Reads an audio file and returns the audio time series and sampling rate.
+
+    Args:
+        file_path (str): Path to the audio file.
+
+    Returns:
+        tuple: audio_time_series (numpy.ndarray), sampling_rate (int)
+    """
+
+    if not os.path.exists(file_path):
+        raise FileNotFoundError(f"File not found: {file_path}")
+    try:
+        audio, sr = librosa.load(file_path, sr=None) # Load with original sampling rate.
+        return audio, sr
+    except Exception as e:
+        raise RuntimeError(f"Error reading the audio file: {e}")