Add support for .properties files when patching

### Enhancement Type

Improve an existing feature

### Describe the enhancement

I noticed that when trying to set up a patch definition for simple voice chat to change the port it uses the `.properties` file type isn't recognized

`The file format of /data/config/voicechat/voicechat-server.properties could not be identified`

It would be nice to get support for these files since a few mods use them

Start by locating the patch-definition handling and its tests, then reproduce the failure with /data/config/voicechat/voicechat-server.properties. Done means patch definitions recognize .properties files and can change the port value without the file-format error.

Written by the indexing model from the issue text.