feat: add GuardrailsAI community integration

[Pouyanpi]

TODO

[codecov-commenter]

Codecov Report

❌ Patch coverage is 65.18987% with 55 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.47%. Comparing base (dd1ce5f) to head (ef55f83).

Files with missing lines	Patch %	Lines
nemoguardrails/library/guardrails_ai/actions.py	60.74%	42 Missing ⚠️
nemoguardrails/library/guardrails_ai/registry.py	60.71%	11 Missing ⚠️
nemoguardrails/library/guardrails_ai/errors.py	90.90%	1 Missing ⚠️
nemoguardrails/rails/llm/config.py	91.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1298      +/-   ##
===========================================
- Coverage    70.52%   70.47%   -0.06%     
===========================================
  Files          161      164       +3     
  Lines        16267    16425     +158     
===========================================
+ Hits         11473    11576     +103     
- Misses        4794     4849      +55     

Flag	Coverage Δ
python	70.47% <65.18%> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
nemoguardrails/library/guardrails_ai/errors.py	90.90% <90.90%> (ø)
nemoguardrails/rails/llm/config.py	90.36% <91.66%> (+0.02%)	⬆️
nemoguardrails/library/guardrails_ai/registry.py	60.71% <60.71%> (ø)
nemoguardrails/library/guardrails_ai/actions.py	60.74% <60.74%> (ø)

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[Pouyanpi]

@zsimjee please have a look.

If you are OK with this approach we can follow two options: 1) we continue working on it on this branch and eventually merge it and close #810 2) we cleanup #810 and target this PR to that branch.

[zsimjee]

Hi Pouyan! This looks great, happy to work on it here. I think I just need to pull down/test through