Research setting aspect-ratio

[Witoso]

After #14313 we want to check if we should set on the model, and later on inline styles in the data output an aspect-ratio style.

This attribute could help us to:
1. remove height:auto style from the img.
2. show non-proportionally resized images that come from CKEditor 4 for example.

Outcome:
Research setting inline aspect-ratio based on resizedHeight & resizedWidth or fallback to attributes width and height.

[Witoso]

Closing as duplicate of #14357.