Implement deleting qualifications (#24)

Co-authored-by: Phan Huy Tran <p.tran@neusta.de>
Reviewed-on: #24
Reviewed-by: Constantin Simonis <constantin@simonis.lol>

src/app/qualifications/qualifications.component.html

@@ -0,0 +1,42 @@
+<div class="flex">
+  <h1 class="text-2xl font-semibold">Qualifications</h1>
+  <button mat-flat-button class="ml-auto bg-blue-600" (click)="openCreateModal()">
+    <mat-icon class="mr-2">add</mat-icon>
+    Create qualification
+  </button>
+</div>
+
+@if (qualifications$ | async; as qualifications) {
+  @if (qualifications) {
+    <table
+      mat-table
+      [dataSource]="qualifications"
+      class="mat-elevation-z8"
+    >
+      <ng-container matColumnDef="id">
+        <th mat-header-cell *matHeaderCellDef>ID</th>
+        <td mat-cell *matCellDef="let qualification">{{ qualification.id }}</td>
+      </ng-container>
+
+      <ng-container matColumnDef="skill">
+        <th mat-header-cell *matHeaderCellDef>Skill</th>
+        <td mat-cell *matCellDef="let qualification">{{ qualification.skill }}</td>
+      </ng-container>
+
+      <ng-container matColumnDef="actions">
+        <th mat-header-cell *matHeaderCellDef>Actions</th>
+        <td mat-cell *matCellDef="let qualification">
+          <button mat-icon-button color="primary" (click)="openEditModal(qualification)">
+            <mat-icon>edit</mat-icon>
+          </button>
+          <button mat-icon-button color="warn" (click)="openDeleteModal(qualification.id)">
+            <mat-icon>delete</mat-icon>
+          </button>
+        </td>
+      </ng-container>
+
+      <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
+      <tr mat-row *matRowDef="let row; columns: displayedColumns"></tr>
+    </table>
+  }
+}