docs: improve README with better formatting and structure

[ponyfly6]

• Add emojis and visual improvements for better readability
• Add directory tree example for clearer structure visualization
• Provide code snippets and command examples
• Add PR checklist for better contribution guidelines
• Include code review process explanation
• Add license and acknowledgments sections
• Enhance support and feedback channels
• Improve overall tone and clarity

Plugin Submission Form

1. Metadata

• Plugin Author:
• Plugin Name:
• Repository URL:

2. Submission Type

• New plugin submission
• Version update for existing plugin

3. Description

4. Checklist

• I have read and followed the Publish to Xpert Marketplace guidelines
• I have read and comply with the Plugin Developer Agreement
• I confirm my plugin works properly on both Xpert Community Edition and Cloud Version
• I confirm my plugin has been thoroughly tested for completeness and functionality
• My plugin brings new value to Xpert

5. Documentation Checklist

Please confirm that your plugin README includes all necessary information:

• Step-by-step setup instructions
• Detailed usage instructions
• All required APIs and credentials are clearly listed
• Connection requirements and configuration details
• Link to the repository for the plugin source code

6. Privacy Protection Information

Based on Xpert Plugin Privacy Protection Guidelines:

Data Collection

Privacy Policy

• I confirm that I have prepared and included a privacy policy in my plugin package based on the Plugin Privacy Protection Guidelines

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