Add docutils.utils.roman (#12393)

Author: danieleades

stubs/docutils/docutils/utils/roman.pyi

@@ -0,0 +1,14 @@
+import re
+
+class RomanError(Exception): ...
+class OutOfRangeError(RomanError): ...
+class NotIntegerError(RomanError): ...
+class InvalidRomanNumeralError(RomanError): ...
+
+romanNumeralMap: tuple[tuple[str, int], ...]
+
+def toRoman(n: int) -> str: ...
+
+romanNumeralPattern: re.Pattern[str]
+
+def fromRoman(s: str) -> int: ...