Sample MPL queries

`otel-demo-metrics`:`http.server.request.duration`
| where `axiom.histogram` == "count"
| where `http.response.status_code` < 400
| align to 5m using prom::rate
| group by `http.request.method`, `http.route` using sum

`otel-demo-metrics`:`http.server.request.duration`
| where `http.response.status_code` < 400
| bucket by `service.name` to 5m using interpolate_delta_histogram(0.90, 0.99)

`otel-demo-metrics`:`http.server.request.duration`
| where `http.response.status_code` < 400
| bucket by `http.request.method`, `http.route` to 5m using interpolate_cumulative_histogram(rate, 0.90, 0.99)

(
  `otel-demo-metrics`:`http.server.request.duration`
  | where `http.response.status_code` >= 500
  | map rate
  | align to 5m using avg
  | group using sum,
  `otel-demo-metrics`:`http.server.request.duration`
  | map rate
  | align to 5m using avg
  | group using sum
)
| compute error_rate using /

`otel-demo-metrics`:`jvm.cpu.recent_utilization`
| group using max
| map is::lt(0.8)
| align to 7d using avg

`otel-demo-metrics`:`http.server.request.duration`
| bucket to 5m using interpolate_cumulative_histogram(rate, 0.99)
| map is::lt(0.4)
| align to 7d using avg