Recreate iNaturalist Social Icon from Scratch (Clean Version for License Review)

[metemaddar]

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

This PR re-introduces the iNaturalist social icon to the PaperMod theme.
A previous version of this icon was removed in PR #1803 because the source SVG was under a GPL license, which conflicted with PaperMod's MIT license.

In this new version, the iNaturalist icon has been manually recreated from scratch using Inkscape, based on the official iNaturalist visual reference, to ensure no licensing conflicts.
The purpose of this PR is primarily to document and stage the new clean version of the icon for future verification of its license.

Original design reference:
https://www.inaturalist.org/pages/press

SVG Icon:

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

Yes — related to previous PRs:

• #1795 (initial addition)
• #1803 (removal due to GPL license conflict)

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. (To be confirmed after further research.)
• 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

[metemaddar]

According to the License:
This icon is used only for linking to users' iNaturalist profiles (referral context).
According to iNaturalist staff (Carrie Seltzer, May 2019):

“Using the iNaturalist logo to add a link to your iNaturalist project ... is definitely ok.
You don’t need our approval to use the logo in editorial or referral contexts.”

Reference: https://forum.inaturalist.org/t/may-i-use-the-inaturalist-logo-to-link-to-project-on-a-blog/2978/3
The icon was manually recreated in Inkscape and is not copied from GPL sources.