Allow reviewers to quickly filter the file list by file type
Our Dev team can create some reviews containing a lot of various files (eg. *.cs, *.xml, *.csproj, *.config...).
When reviewing the files under the 'Review Materials' section, we would like to filter the files by their extension types so that we can focus on the most important changes.
For instance, we can have just a few critical changes located under some .cs files and many unimportant changes in our .csproj files. In such cases, we would like to see at one glance the modified .cs files.