influxdata/telegraf ? reverse-engineered prompt

Build me a lightweight Go agent that can collect, process, aggregate, and send metrics and logs from different sources. I want it to use a simple TOML config, with pluggable inputs and outputs so I can turn on things like system stats, file tailing, HTTP, Kafka, MQTT, and other common collectors without changing the core app.

It should run as a single standalone binary, be easy to deploy, and support basic filtering, transforms, and aggregation before writing data out. Please include a few example plugins, a clean way to add more later, and a solid quick start so I can test it locally right away. If anything about the latest setup or best practices has changed, look up the current docs online and follow that.