Re-define sub mining routes properly and use router outlet

frontend/src/app/components/hashrate-chart/hashrate-chart.component.html

@@ -0,0 +1 @@
+<p>hashrate-chart works!</p>

frontend/src/app/components/hashrate-chart/hashrate-chart.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-hashrate-chart',
+  templateUrl: './hashrate-chart.component.html',
+  styleUrls: ['./hashrate-chart.component.scss']
+})
+export class HashrateChartComponent implements OnInit {
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}