Add system metrics and dashboard

[depombo]

Alternatives:

• cloudwatch metrics
• datadog (we should drop mezmo/logdna if we do this)
• statsd + grafana
• chronosphere

[depombo]

https://signoz.io is also considered a common open source datadog alternative

[aguillenv]

Initially added cloudwatch agent to staging with its dashboard

[aguillenv]

Metrics with cloud watch agent were added to production too