message: add benchmark overview dashboard
  A dashboard to see validators under benchmark
diff: "steppedLine": false,
  "targets": [
  {
  - "expr": "irate(mempool{op=~\"insert..*\"}[1m])\n",
  + "expr": "label_replace(irate(mempool{op=~'insert..*'}[1m]), 'status', '$1', 'op', '.*code: (.*?),.*')",
  "format": "time_series",
  "intervalFactor": 1,
  - "legendFormat": "{{peer_id}}:{{op}}",
  + "legendFormat": "{{peer_id}}: {{status}}",
  "refId": "A"
  }
  ],
  "steppedLine": false,
  "targets": [
  {
  - "expr": "irate(mempool{op=~\"smp.event.*\"}[1m])",
  + "expr": "label_replace(irate(mempool{op=~'smp.event.*'}[1m]), 'event', '$1', 'op', 'smp.event.(.*)')",
  "format": "time_series",
  "intervalFactor": 1,
  - "legendFormat": "{{peer_id}}",
  + "legendFormat": "{{peer_id}}: {{event}}",
  "refId": "A"
  }
  ],
  "timeFrom": null,
  "timeRegions": [],
  "timeShift": null,
  - "title": "incoming events per sec",
  + "title": "Incoming events per sec",
  "tooltip": {
  "shared": true,
  "sort": 0,
  "steppedLine": false,
  "targets": [
  {
  - "expr": "irate(mempool{op=~\"smp.transactions.received.*\"}[1m])",
  + "expr": "label_replace(irate(mempool{op=~'smp.transactions.received.*'}[1m]), 'sender', '$1', 'op', 'smp.transactions.received.(.{8}).*')",
  "format": "time_series",
  "intervalFactor": 1,
  - "legendFormat": "{{peer_id}}",
  + "legendFormat": "{{peer_id}} <- {{sender}}",
  "refId": "A"
  }
  ],
  "timeFrom": null,
  "timeRegions": [],
  "timeShift": null,
  - "title": "new transactions received per sec",
  + "title": "New transactions received per sec",
  "tooltip": {
  "shared": true,
  "sort": 0,
  "steppedLine": false,
  "targets": [
  {
  - "expr": "irate(mempool{op=~'smp.smp.transactions.success.*'}[1m])",
  + "expr": "label_replace(irate(mempool{op=~'smp.transactions.success.*'}[1m]), 'sender', '$1', 'op', 'smp.transactions.success.(.{8}).*')",
  "format": "time_series",
  "intervalFactor": 1,
  - "legendFormat": "{{peer_id}}",
  + "legendFormat": "{{peer_id}} <- {{sender}}",
  "refId": "A"
  }
  ],
  "timeFrom": null,
  "timeRegions": [],
  "timeShift": null,
  - "title": "successful transactions per sec",
  + "title": "Successful transaction sync per sec",
  "tooltip": {
  "shared": true,
  "sort": 0,
  },
  "timezone": "",
  "title": "Mempool",
  - "uid": "jiPCqF7Zz",
  + "uid": "mempool",
  "version": 1
  }
  