💄 style: Add gemini-exp-1121 model

[xgbstar1]

💻 变更类型 | Change Type

* [ ]  ✨ feat

* [ ]  🐛 fix

* [ ]  ♻️ refactor

* [x]  💄 style

* [ ]  👷 build

* [ ]  ⚡️ perf

* [ ]  📝 docs

* [ ]  🔨 chore

🔀 变更说明 | Description of Change

https://ai.google.dev/gemini-api/docs/models/experimental-models

https://x.com/melvinjohnsonp/status/1859673386655633437

📝 补充信息 | Additional Information

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.30%. Comparing base (f1cb0af) to head (60c7382).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##             main    #4782     +/-   ##
=========================================
  Coverage   92.30%   92.30%             
=========================================
  Files         530      530             
  Lines       37118    37135     +17     
  Branches     2368     3535   +1167     
=========================================
+ Hits        34260    34277     +17     
  Misses       2858     2858             

Flag	Coverage Δ
app	92.30% <100.00%> (+<0.01%)	⬆️
server	96.17% <ø> (ø)

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