Add basic API connection to Grocy

Add initial table to show entries

src/app/api/grocy-config-dialog/grocy-config-dialog.component.html

@@ -0,0 +1,15 @@
+<h2 mat-dialog-title>Setup grocy config</h2>
+<mat-dialog-content>
+  <mat-form-field>
+    <mat-label>URI</mat-label>
+    <input matInput placeholder="https://{{host}}" [(ngModel)]="uri">
+  </mat-form-field>
+  <mat-form-field>
+    <mat-label>API key</mat-label>
+    <input matInput placeholder="API key" [(ngModel)]="apiKey">
+  </mat-form-field>
+
+</mat-dialog-content>
+<mat-dialog-actions>
+  <button mat-button (click)="save()">Save</button>
+</mat-dialog-actions>