[Feature Request] Support line and column number as command-line arguments

Hello!

Please support line and column number as args so that the file can be opened with cursor at desired position.

Usecase: Such a feature can be used by text searching tools to allow users jump at the exact position of the matching text in files instead of just listing the files containing the search text.

E.g. catfish currently just lists the files containing matching text when searched with "Search file contents". Catfish has the exact position marker but can't pass it to mousepad as mousepad doesn't support line and column numbers as arguments.