docs: 添加涉密文件自检工具实施计划

UmiOCR-data/site-packages/fontTools/feaLib/location.py

@@ -0,0 +1,12 @@
+from typing import NamedTuple
+
+
+class FeatureLibLocation(NamedTuple):
+    """A location in a feature file"""
+
+    file: str
+    line: int
+    column: int
+
+    def __str__(self):
+        return f"{self.file}:{self.line}:{self.column}"