Markup errors as errors and warnings as warnings

[HiranChaudhuri]

During my project build I am getting messages like

copyFile(/project/images/strip_grass.png, /output/strip_grass.png) failed: Error: ENOENT: no such file or directory, stat '/project/images/strip_grass.png'
copyFile(/project/images/strip_water.png, /output/strip_water.png) failed: Error: ENOENT: no such file or directory, stat '/project/images/strip_water.png'
copyFile(/project/sounds/plane_explodes.wav, /output/plane_explodes.wav) failed: Error: ENOENT: no such file or directory, stat '/project/sounds/plane_explodes.wav'

According to arthuro555/gdexporter#7 they are just warnings, which means the fact that GDevelop finishes building the project is ok.

Would it be possible to change the word "error" to "warning" in such cases?

[4ian]

Yes there is a real need to improve the error reporting so that errors/warnings during exports are exposed in the interface. There is a start of a discussion here: #2919 (comment)
And a card on the roadmap: https://trello.com/c/IiLgNR16/462-add-a-diagnostic-report-to-warn-about-potential-issues-in-the-game-and-show-them-in-the-events-sheet