feat: Support AWS Bedrock OAuth

[pwn-0x309]

Affected area

Provider integration

What problem are you trying to solve?

I would like to ask for our roadmap to support for new provider integration for AWS Bedrock OAuth

Proposed solution or direction

No response

Suggested user flow

No response

Alternatives considered

No response

Additional context

No response

Before submitting

• I searched existing issues and docs first.
• This request describes a concrete user problem, not just a broad idea dump.