Add echart module.

frontend/package.json

@@ -67,6 +67,7 @@
     "@fortawesome/fontawesome-common-types": "^0.2.35",
     "@fortawesome/fontawesome-svg-core": "^1.2.35",
     "@fortawesome/free-solid-svg-icons": "^5.15.3",
+    "@juggle/resize-observer": "^3.3.1",
     "@mempool/chartist": "^0.11.4",
     "@mempool/mempool.js": "^2.2.4",
     "@ng-bootstrap/ng-bootstrap": "^7.0.0",
@@ -76,9 +77,11 @@
     "browserify": "^17.0.0",
     "clipboard": "^2.0.4",
     "domino": "^2.1.6",
+    "echarts": "^5.1.2",
     "express": "^4.17.1",
     "lightweight-charts": "^3.3.0",
     "ngx-bootrap-multiselect": "^2.0.0",
+    "ngx-echarts": "^7.0.1",
     "ngx-infinite-scroll": "^10.0.1",
     "qrcode": "^1.4.4",
     "rxjs": "^6.6.7",