Ajoute date debut et date de fin

Signed-off-by: Gato <cedric@goutailler-olivier.fr>

src/app/issues/issue-detail/issue-detail.html

@@ -153,6 +153,33 @@
           <label class="field-label">Assignee</label>
           <input aria-label="Assignee" class="form-control form-control-sm" type="text" [(ngModel)]="issue.assignee" (blur)="saveIssue()" />
         </div>
+        <div class="row g-2">
+          <div class="col-6">
+            <label class="field-label">Date de début</label>
+            <input
+              aria-label="Date de début"
+              class="form-control form-control-sm"
+              [class.is-invalid]="!!dateValidationError"
+              type="date"
+              [(ngModel)]="issue.startDate"
+              (blur)="saveIssue()"
+            />
+          </div>
+          <div class="col-6">
+            <label class="field-label">Date de fin</label>
+            <input
+              aria-label="Date de fin"
+              class="form-control form-control-sm"
+              [class.is-invalid]="!!dateValidationError"
+              type="date"
+              [(ngModel)]="issue.endDate"
+              (blur)="saveIssue()"
+            />
+          </div>
+          @if (dateValidationError) {
+            <div class="col-12 text-danger small">{{ dateValidationError }}</div>
+          }
+        </div>
         <div>
           <label class="field-label">Date d'échéance</label>
           <input aria-label="Date d'échéance" class="form-control form-control-sm" type="date" [(ngModel)]="issue.dueDate" (blur)="saveIssue()" />