selectImage multiple selection

[prdt3e]

At that time I had implemented the preparation for a multiple selection (check boxes) in typo3image.js.
In line 420 I had installed the first entry for lack of time.

It would be nice if someone would finish this.
Especially in the area of ​​PHP SelectImageController.php
and the behavior with getImageDialog (disabled on multiple?).

[DavidBruchmann]

For the output a single attribute width or height is criticized by lighthouse.
So, no matter if the image is processed or not (with an option noScale), the missing value should be calculated.
The TYPO3 core never has this feature by itself.