feat: Improved deskew to focus on horizontal lines

- Modified deskew function to better detect staff lines
- Added morphological operations to enhance horizontal lines
- Used probabilistic Hough transform for more precise line detection
- Added .png to gitignore

pyproject.toml

@@ -5,5 +5,6 @@ description = "Add your description here"
 readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
+    "click>=8.1.7",
     "pydantic>=2.10.3",
 ]