add echochambers

[savageops]

Add missing prebuild source for echochambers plugin

TL;DR

Added the complete original prebuild source files for the echochambers plugin that were missing from the initial implementation.

Background

During the code audit, we identified that while the echochambers plugin was added, it was missing critical prebuild source files that are necessary for proper functionality/maintainability. This PR addresses this gap.

Changes

• Added complete prebuild source refactored files
• Maintained file structure as per repository

Testing

• Verified plugin continues to function as expected
• Confirmed build process completes successfully with prebuild files
• No regression in existing functionality

Notes

• This is a maintenance PR to ensure we have complete source control and can properly debug/maintain the plugin
• No functional changes, purely adding source files that should have been included initially
• Follows original plugin structure