Add N&N for SVG support

[Michael5601]

This PR contributes an N&N informing about the support of SVGs for loading images in Eclipse.

See eclipse-platform/eclipse.platform.swt#1638.

[Michael5601]

I will change the screenshots to light mode after we discussed if these screenshots are appropriate. On Windows Eclipse now uses the "smooth" scaling as default. The screenshots I provided still use the "nearest" scaling method so the difference in comparison to SVGs is way bigger.

[HeikoKlare]

I have slightly updated the entry and added information about the de-facto deprecation of the replaced PNG images and their potential removal with Eclipse 2027-06 or later.

The screenshots are fine for me. Also comparing with nearest scaling makes sense to me as that's what users were used to and a comparison with smooth scaling will not so much show a visible difference. And anyway, it's not only about improved look but also about more flexibility, reduced development efforts etc.
I have replaced the images with light mode ones at the same sizes. I also clarifies that the PNG-based images are taken with scaling mode nearest.

[HeikoKlare]

Thank you for providing the news entry, @Michael5601!