Add working hyperlink detection in post content

[ByteOtter]

What does this PR change?

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• [x] Add new feature

• [ ] UI improvement

• [ ] Changed routing

• [ ] Security changes

• [ ] Testsuite
  

• [ ] General Maintenance

UI changes

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• No changes

  • [x] DONE

Links

In case your changes fix an existing issue please link it below:

Tracks: #50

• [x] DONE

Documentation

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• No documentation needed
  

• [x] DONE