Run Load Tests Under CI

[samliok]

Currently, we have a load testing script that can stress test network throughput for VMs. However, the current implementation has several limitations. It is clunky as it there are multiple dependencies. It also lacks CI integration, preventing us from detecting breaking changes.

Proposed Changes
Implement a scaled-down version of the load test in CI and run it as a cronjob with a weekly cadence. Additionaly, we should export metrics from these runs. Such as node-level metrics, tps metrics, and general system metrics.