[FEATURE] Allow Configuration of Model Parameters

[ngockhanh5110]

Feature description
Add support for configuring model parameters for all AI models (Claude family and others) in the Amazon Bedrock Client for Mac. Currently, there's no way to control these parameters through the Mac client interface.

Problem it solves (optional)
When using various AI models through the Amazon Bedrock Client for Mac, users cannot customize important model parameters that affect performance and output quality. This limits the utility of the client for professional and development use cases that require fine-tuned control over model behavior, such as reasoning capabilities, temperature, and token limits. Especially on Claude Sonnet 3.7, I really want to control the thinking stage.

Proposed solution
Implement a configuration panel or settings option in the Amazon Bedrock Client for Mac that allows users to specify model-specific parameters, including:

• Token budget for reasoning/extended thinking mode (for applicable models)
• Temperature settings
• Max tokens for response
• Top-p and other sampling parameters
• Model-specific parameters as they become available