feat: Add automated PR creation functionality for issues

## Description
Currently, when working on issues, users need to manually create pull requests after implementing changes.　This process could be streamlined by automatically generating PRs with appropriate titles and descriptions based on issue content.

## Proposed Solution
Add functionality to automatically create pull requests when working on issues, including:
- Automatic PR title generation based on issue title
- Structured PR body with summary and changes sections

## Benefits
- Reduces manual effort in creating PRs
- Ensures consistent PR format across the project
- Automatically links PRs to their corresponding issues
- Improves developer workflow efficiency