feat: Image zoom for tiny images

[przemvs]

Description

Fix for zooming not wide image but long - zoom to middle of screen instead of to random position. Same for not long but wide image - zoom to middle of screen.

Fixed also cursor while image is zoomed.

Screenshots/Screencast (for UI changes)

Before:

Now:

Checklist

• PR has been self reviewed by the author;
• Hard-to-understand areas of the code have been commented;
• If it is a core feature, unit tests have been added;

Important details for the reviewers

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud