Resolve "Explain various benchmarks repositories"

Closes #4 (closed)

src/docs/part3/running_juggler.md

+# Running Reconstruction (Juggler)
+
+## Juggler Overview
+
+Juggler is a Gaudi based event processing framework which uses the [eicd](https://eic.phy.anl.gov/eicd)  data model.
+
+
+##
+