Add comment feature

src/rtl_manifest/rtl_manifest.py

@@ -28,6 +28,8 @@ def read_sources(source_file: str) -> List[str]:
     with open(source_file, "r") as file:
         for line in file:
             path = line.strip()
+            if path.startswith("#"):
+                continue
             if (path.endswith("sources.list")):
                 new_path = pathlib.Path(base_dir) / path
                 for recursive_path in read_sources(new_path):
@@ -36,4 +38,4 @@ def read_sources(source_file: str) -> List[str]:
                 abs_path = pathlib.Path(base_dir / path).absolute()
                 files.append(str(abs_path))
 
-    return files
+    return files