Add support for find_regexp and find_matches_files

[winsmith]

Because many many mods have a dependency on ModuleManager, it is very important to be able to install that module. Therefore we need to support find_regexp and find_matches_files.

  "install" : [
    {
      "find_regexp" : "ModuleManager.*\\.dll$",
      "install_to" : "GameData",
      "find_matches_files" : true
    }
  ],