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

tests/test_input.py

@@ -0,0 +1,13 @@
+import pytest
+from  src.input.file_reader import read_audio
+from src.input.format_checker import is_supported_format
+
+def test_read_audio():
+    file_path = "samples/cafe_crowd_talk.aiff"
+    audio, sr = read_audio(file_path)
+    assert len(audio) > 0
+    assert sr > 0
+
+def test_is_supported_format():
+    assert is_supported_format("samples/cafe_crowd_talk.aiff") == True
+    assert is_supported_format("samples/unsupported_file.txt") == False