Figure shortcode

[gijoe88]

What does this PR change? What problem does it solve?

This change does two things:

• adds functionalities of responsiveness, and of linkage to full size image, to the figure shortcode, same functionalities as for the cover image. The responsive is false by default, keeping current behaviour. Same for linkFullImage
• adds usage of hugo resources to the former code, using relative links, instead of using the src from the developer. If the image is not found in the resources, takes the src.

Was the change discussed in an issue or in the Discussions before?

May well close the issue #1624 . The PR #1651 exists just for this, I saw it after starting my change.

PR Checklist

• This change adds/updates translations and I have used the template present here.
• I have enabled maintainer edits for this PR.
• I have verified that the code works as described/as intended.
• This change adds a Social Icon which has a permissive license to use it.
• This change does not include any CDN resources/links.
• This change does not include any unrelated scripts such as bash and python scripts.
• This change updates the overridden internal templates from HUGO's repository.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[gijoe88]

@valnaumov and @sammedhi both did the same fix to images in multilingual sites, in #1651 and #1777