Notify the user, if the ROM file was changed while editing

[Dariosky-01]

Sometimes it happens to work with more software, for example a map editor together with Foundry, and it often happens to keep Foundry open while you are already modifying the .rom with another software, however, two situations happen:

1- He resumes working with Foundry forgetting that the .rom file uploaded by Foundry has changed

2- You remember and you are forced to re-open the file to return to the same point.

I have two solutions.

For point number 1 an automatic check every 5 seconds could establish if the uploaded file is different from the one uploaded at the beginning when we opened that file we would be modifying, in the end, established if it is true or if it is false, notify it with two warning symbols in the window, one red and one green, where green means that nothing has changed yet, red if the file has changed.

For point number 2 it may be necessary to combine a simple "update file" command which would avoid going to search for the file again, wasting time.

[mchlnix]

To understand what the best change would be, I would be interested to know why you would edit the Overworld and specific levels at the same time?

Regardless, it should be easy to add an option to reload the rom and either keep or discard the changes to the currently opened level.