feat(llm-bridge): add x.ai provider

[fanweixiao]

add x.ai support

• docs: https://docs.x.ai/api#introduction

Caution

Function calling is currently not working due to an API bug.

/chat/completions endpoint works, but the function calling feature is still affected by the x.ai API error.

Official Docs state that the finish_reason should be tool_calls, but API returns stop, this breaks the system.

We will fix it as soon as x.ai resolves the API bug.

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1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
yomo	⬜️ Ignored (Inspect)	Visit Preview		Oct 25, 2024 3:31am

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.31%. Comparing base (bb8e3db) to head (fc48515).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #927      +/-   ##
==========================================
- Coverage   79.07%   78.31%   -0.76%     
==========================================
  Files          50       51       +1     
  Lines        2958     3713     +755     
==========================================
+ Hits         2339     2908     +569     
- Misses        449      634     +185     
- Partials      170      171       +1     

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