Use highest quality for JPEG and PNG images

[MegaChriz]

Is your feature request related to a problem? Please describe.

When inserting images in a Word document I sometimes find the quality of these images poor. Especially for JPEG files. I discovered that in src/PhpWord/Element/Image.php the function imagejpeg() is used for creating an image in the document. That function has a parameter called $quality. According to https://www.php.net/imagejpeg, a quality of about 75 is used as default for generating the jpeg. I find this value to be too low.

Describe the solution you'd like

The functions imagejpeg() and imagepng() have a parameter called $quality. I'd like PHPWord to pass a value for that parameter and default it to the maximum quality.

• For imagejpeg(), the value for the maximum quality is 100.
• For imagepng(), the value for the maximum quality is 0 (see https://www.php.net/imagepng).

Describe alternatives you've considered

None.

Additional context

Before (JPEG quality of 75 in Word document):

After (JPEG quality of 100 in Word document):