Add #nullable enable directive to fix CS8632 warnings

Co-authored-by: renemadsen <[email protected]>

Author: Copilot

eFormAPI/Plugins/TimePlanning.Pn/TimePlanning.Pn/Controllers/TimePlanningPlanningController.cs

@@ -18,6 +18,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */
 
+#nullable enable
 namespace TimePlanning.Pn.Controllers;
 
 using System.Collections.Generic;

eFormAPI/Plugins/TimePlanning.Pn/TimePlanning.Pn/Controllers/TimePlanningWorkingHoursController.cs

@@ -18,6 +18,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */
 
+#nullable enable
 using System;
 using System.Text;
 using Microsoft.AspNetCore.Authorization;

eFormAPI/Plugins/TimePlanning.Pn/TimePlanning.Pn/Services/TimePlanningPlanningService/ITimePlanningPlanningService.cs

@@ -22,6 +22,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */
 
+#nullable enable
 namespace TimePlanning.Pn.Services.TimePlanningPlanningService;
 
 using System.Collections.Generic;

eFormAPI/Plugins/TimePlanning.Pn/TimePlanning.Pn/Services/TimePlanningPlanningService/TimePlanningPlanningService.cs

@@ -22,6 +22,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */
 
+#nullable enable
 using System.Text.RegularExpressions;
 using Microting.EformAngularFrontendBase.Infrastructure.Data;
 using Microting.eFormApi.BasePn.Infrastructure.Helpers.PluginDbOptions;

eFormAPI/Plugins/TimePlanning.Pn/TimePlanning.Pn/Services/TimePlanningWorkingHoursService/ITimePlanningWorkingHoursService.cs

@@ -18,6 +18,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */
 
+#nullable enable
 using System;
 using System.IO;
 using Microsoft.AspNetCore.Http;