chore: Document Missing Plugin Documentation and Examples

[madjin]

Overview
Several plugins in the Eliza framework lack comprehensive documentation. This makes it harder for new developers to understand and utilize these components.

Missing Plugin Documentation:

• plugin-0g - File storage plugin
• plugin-aptos - Aptos blockchain integration
• plugin-conflux - Conflux blockchain integration
• plugin-echochambers - Echo chamber client
• plugin-flow - Flow blockchain integration
• plugin-goat - GOAT functionality
• plugin-icp - Internet Computer integration
• plugin-image-generation - Image generation capabilities
• plugin-intiface - Intiface integration
• plugin-multiversx - MultiversX blockchain
• plugin-near - NEAR Protocol integration
• plugin-nft-generation - NFT creation functionality
• plugin-story - Story/IP management
• plugin-sui - Sui blockchain integration
• plugin-ton - TON blockchain integration
• plugin-trustdb - Trust database functionality
• plugin-video-generation - Video generation features
• plugin-web-search - Web search capabilities
• plugin-whatsapp - WhatsApp integration
• plugin-zksync-era - zkSync Era integration

Proposed Documentation Structure
For each plugin, we need:

1. Overview and purpose
2. Installation instructions
3. Configuration requirements
4. Usage examples
5. API reference
6. Common issues/troubleshooting

Additional Missing Docs

• Examples folder documentation
• Testing guide expansion
• Plugin development guide
• Security best practices
• Performance optimization guide

Value Add
This documentation will:

• Improve developer onboarding
• Reduce support questions
• Enable faster plugin adoption
• Help maintain code quality