Add more details to FileManager error report

[MrStevns]

The purpose of this PR has been to make the error report cover more steps, introduce "Error" to make it more explicit what's a information, a warning and an error.

I've also tried to make it fail faster rather than spitting out all kinds of irrelevant information when the actual error happened 4 lines above.

Here's an example of what our current report looks like:

Raw file path: /Users/mrstevns/Desktop/p2d testing/test-save-corruption.pclx
Resolved file path: /Users/mrstevns/Desktop/p2d testing/test-save-corruption.pclx
  File name: /Users/mrstevns/Desktop/p2d testing/test-save-corruption.pclx
  Recognized New zipped Pencil2D File Format (*.pclx) !
    Miniz found an error while reading the file. - 7, failed finding central directory
    Miniz found an error while closing file file. - 24, invalid parameter
  XML file: /private/var/folders/5c/2bmlz9fx2kzbd56j81ktpghr0000gn/T/Pencil2D/test-save-corruption_Y2xD_cplu6r9q/main.xml
  Data folder: /private/var/folders/5c/2bmlz9fx2kzbd56j81ktpghr0000gn/T/Pencil2D/test-save-corruption_Y2xD_cplu6r9q/data
  Working folder: /private/var/folders/5c/2bmlz9fx2kzbd56j81ktpghr0000gn/T/Pencil2D/test-save-corruption_Y2xD_cplu6r9q/
  Main XML file does not exist
System Info
Pencil2D version: 0.7.0.911 (stable)
Build ABI: x86_64-little_endian-lp64
Kernel: darwin, 21.6.0
Operating System: macOS 12.7
end

And here's the new one:

Raw file path: /Users/mrstevns/Desktop/p2d testing/test-save-corruption.pclx
Resolved file path: /Users/mrstevns/Desktop/p2d testing/test-save-corruption.pclx
  
[Project LOAD diagnostics]

  File name: /Users/mrstevns/Desktop/p2d testing/test-save-corruption.pclx
  Working dir: /private/var/folders/5c/2bmlz9fx2kzbd56j81ktpghr0000gn/T/Pencil2D/test-save-corruption_Y2xD_719f2v7t/
  Project format: .pclx
    
[Miniz sanity check]

    Found an error while reading the file. Error code: 7, reason: failed finding central directory
    Found an error while closing the file. Error code: 24, reason: invalid parameter
  
Error: Unable to extract project, miniz sanity check failed.

[System Info]

  Pencil2D version: 0.0.0.0 (dev)
  Build ABI: x86_64-little_endian-lp64
  Kernel: darwin, 21.6.0
  Operating System: macOS 12.7
  Language: en_GB

In addition the error dialog now also has a "Copy to clipboard" button, so the user can more easily paste the error report.