Add Agent Message Queue to Community Plugins

[internet-dot]

Summary\n- Add Agent Message Queue by @avivsinai to the Community Plugins list under Tools & Integrations\n- File-based inter-agent messaging with co-op mode, cross-project federation, and orchestrator integrations\n- Updates plugins.json with new entry and total = 27\n\nSupersedes #21 (closed due to merge conflict with #20).

[gemini-code-assist]

Code Review

This pull request updates the total plugin count in plugins.json from 26 to 27. However, the feedback indicates that the actual plugin entry is missing from the file, creating an inconsistency. Furthermore, plugins.json is a generated file that should not be edited manually; the recommended workflow is to update the README.md and run the regeneration script to ensure data integrity.

[gemini-code-assist]

The total count has been updated to 27, but the corresponding entry for "Agent Message Queue" is missing from the plugins array in this pull request. This results in an inconsistent state where the metadata does not match the actual number of plugins.

Additionally, plugins.json is a generated file (see scripts/generate_plugins_json.py). Manually updating it bypasses the source of truth in README.md and will likely lead to these changes being overwritten during the next build or regeneration process. The recommended workflow is to update the README.md first and then run the regeneration script to ensure both files are consistent and correctly formatted.