text: re-adding Chrf implementation [reverted]

[Borda]

This reverts commit 663f06d.

What does this PR do?

re-adding Chrf temp drooped in #2668

Before submitting

• Was this discussed/agreed via a Github issue? (no need for typos and docs improvements)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure to update the docs?
• Did you write any new necessary tests?

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📚 Documentation preview 📚: https://torchmetrics--2697.org.readthedocs.build/en/2697/

[codecov]

Codecov Report

Attention: Patch coverage is 85.53459% with 23 lines in your changes missing coverage. Please review.

Project coverage is 39%. Comparing base (ef22554) to head (dd9c0c7).

Additional details and impacted files

@@           Coverage Diff            @@
##           master   #2697     +/-   ##
========================================
- Coverage      69%     39%    -29%     
========================================
  Files         316     316             
  Lines       17745   17897    +152     
========================================
- Hits        12185    7025   -5160     
- Misses       5560   10872   +5312     

[Borda]

Waiting on @m-popovic to approve it... 🦩

[Borda]

@stancld pls read #2697 (comment)

[mergify]

⚠️ The sha of the head commit of this PR conflicts with #2701. Mergify cannot evaluate rules on this PR. ⚠️

[Borda]

reopen in #2701

[mergify]

⚠️ The sha of the head commit of this PR conflicts with #2701. Mergify cannot evaluate rules on this PR. ⚠️