Refactor distro.info() method to return an InfoDict (#360)

Author: scc-tw

src/distro/distro.py

@@ -995,10 +995,10 @@ def info(self, pretty: bool = False, best: bool = False) -> InfoDict:
 
         For details, see :func:`distro.info`.
         """
-        return dict(
+        return InfoDict(
             id=self.id(),
             version=self.version(pretty, best),
-            version_parts=dict(
+            version_parts=VersionDict(
                 major=self.major_version(best),
                 minor=self.minor_version(best),
                 build_number=self.build_number(best),