[FEATURE]模型供应商可以支持AWS bedrock

**SQLBot version**

**Please describe your requirements or suggestions for improvement**

<img width="901" height="656" alt="Image" src="https://github.com/user-attachments/assets/621c004b-8b8e-461f-afe9-dc9d8f92ad02" />

<img width="1247" height="403" alt="Image" src="https://github.com/user-attachments/assets/0e28216f-72ec-450a-b34d-159111b88d3c" />