Add Image Straightening

[Kazevic]

Checklist

• [X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• [X] This issue contains only one feature request.
• [X] I have read and understood the contribution guidelines.
• [ ] I optionally donated to support the Fossify mission.

Feature description

Just like Simple Gallery's advanced editor, it should be straightforward and show the angle of the photo while you're straightening it.

Why do you want this feature?

When I want to fix a tilted photo, there is no way to do it. The closest way is to rotate the photo, but it is quite different.

Additional information

No response