Merge `_Info`, `_StatResultInfo` and `_DirEntryInfo` into a single `_Info` class. No other changes. This will allow us to use a cached `os.stat()` result from our upcoming `_Info.stat()` method even when we have a backing `os.DirEntry`.
Merge `_Info`, `_StatResultInfo` and `_DirEntryInfo` into a single `_Info` class. No other changes. This will allow us to use a cached `os.stat()` result from our upcoming `_Info.stat()` method even when we have a backing `os.DirEntry`.