created new sprint form component draft

src/app/sprint-component/sprint.component.ts

@@ -0,0 +1,54 @@
+import { Component, OnInit } from '@angular/core';
+import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
+import { BackendService, ScrumSprint } from '../services/backend.service';
+import { SprintFormComponent } from '../sprint-form/sprint-form.component';
+
+@Component({
+  selector: 'app-sprint',
+  templateUrl: './sprint.component.html',
+  styleUrls: ['./sprint.component.css']
+})
+export class SprintComponent implements OnInit {
+
+  public sprints: ScrumSprint[] = [];
+
+  constructor(private backendService: BackendService, private modalService: NgbModal) { 
+      backendService.getSprints().subscribe(response => {
+          if (response.status > 399) {
+              alert('Fehler');
+          }
+          else {
+              this.sprints.push(...response.body);
+          }
+      });
+  }
+
+  ngOnInit(): void {
+  }
+
+  public deleteSprint(sprint: ScrumSprint) {
+    this.backendService.deleteSprint(sprint).subscribe(response => {
+      if (response.status > 399) {
+        alert('Fehler');
+      }
+    });
+    const index = this.sprints.indexOf(sprint);
+    if (index !== -1) {
+      this.sprints.splice(index, 1);
+    }    
+  }
+
+  public openSprintForm(editSprint: ScrumSprint) {
+    const modalRef = this.modalService.open(SprintFormComponent, {
+      backdrop: 'static',
+      keyboard: true,
+    });
+    if (editSprint === null) {
+      modalRef.result.then(result => {
+        this.sprints.push(result);
+      });
+    }
+    modalRef.componentInstance.userstory = editSprint;
+  }
+
+}