Feat: support bedrock endpoint configuration with env variable

[oliviamn]

💻 变更类型 | Change Type

• ✨ feat
• 🐛 fix
• ♻️ refactor
• 💄 style
• 👷 build
• ⚡️ perf
• 📝 docs
• 🔨 chore

🔀 变更说明 | Description of Change

1. Add support for Bedrock endpoint setup by using environment variables

📝 补充信息 | Additional Information

add environment variable: AWS_ENDPOINT_URL_BEDROCK_RUNTIME to support bedrock proxy

it resolves the issue(feat request):#4815
user can set environment variable after following the project: https://github.com/jief123/bedrockproxy/blob/main/howto.md

AWS_ENDPOINT_URL_BEDROCK_RUNTIME="https://xxx.cloudfront.net"

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[arvinxx]

Remove log

[oliviamn]

Thanks for the comment, the log has been removed

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 91.34%. Comparing base (541f275) to head (1fd34bf).
Report is 14 commits behind head on main.

Files with missing lines	Patch %	Lines
src/libs/agent-runtime/bedrock/index.ts	83.33%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6215      +/-   ##
==========================================
- Coverage   91.34%   91.34%   -0.01%     
==========================================
  Files         728      728              
  Lines       68362    68387      +25     
  Branches     4597     3304    -1293     
==========================================
+ Hits        62448    62470      +22     
- Misses       5914     5917       +3     

Flag	Coverage Δ
app	91.34% <90.00%> (-0.01%)	⬇️
server	97.57% <ø> (ø)

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