feat: add React.js template

[codevalve]

Add React.js Framework Template

Description

Create a React.js specific template for session-start script that includes:

• React-specific tooling checks
• Common React development workflows
• React best practices and standards
• Create React App and Vite configurations

Tasks

• Create src/templates/react/session-start.sh
• Add React-specific configuration to default.yaml
• Document React template usage
• Add React-specific tool checks

Benefits

• Extends support to React.js developers
• Standardizes React project onboarding
• Helps maintain React best practices

Additional Context

Can be based on the existing Vue.js template structure but adapted for React-specific needs.