Add topic: whistleblowing

[evilaliv3]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/explore/blob/main/CONTRIBUTING.md.
• I am not the sole author or employee of a company who created either the topic I am modifying/adding or the collection entry I am modifying/adding.

Which change are you proposing?

• Suggesting edits to an existing topic or collection
• Curating a new topic or collection
• Something that does not neatly fit into the binary options above

---

Curating a new topic or collection

• I've formatted my changes as a new folder directory, named for the topic or collection as it appears in the URL on GitHub (e.g. https://github.com/topics/[NAME] or https://github.com/collections/[NAME])
• My folder contains a *.png image (if applicable) and index.md
• All required fields in my index.md conform to the Style Guide and API docs: https://github.com/github/explore/tree/main/docs

I consider this section should be curated in order to highlight the research on the matter performed by human rights defenders and activists in developing and promoting whistleblowing technologies like @freedomofpress and @globaleaks, and many others

---

Please note: we will close your PR without comment if you do not check the boxes above and provide ALL requested information.

[ahpook]

LGTM, thanks.

[evilaliv3]

Thank you @ahpook !

Do you know when this changes will enter into production stage and will be published on https://github.com/topics/whistleblowing ?