Magick.Call should resolve with more information

[cancerberoSgx]

Currently Magick.Call will resolve only providing the output files. While this could be enough when working with convert the call should provide other information such as stderr , stdout, exit code. Motivation:

• so I can call "identify" program and read its stdout
• So I can grab all output, warnings or error messages thrown by ImageMagick itself and provide it to the user.

Something like the following would be awesome:

const {outputFiles, stdout, stderr, exitCode} = await Magick.Call(...)

exitCode will tell if IM fails (not just an empty output file list).

Thanks

[cancerberoSgx]

Now there's a new call() function that resolves with stderr, stdout, and exitCode besides the output files.
https://github.com/KnicKnic/WASM-ImageMagick#low-level-example