chore: update modal function signature

Author: MGREMY

libs/flowbite-angular/modal/modal.component.ts

@@ -177,51 +177,51 @@ export class ModalComponent extends BaseComponent<ModalClass> {
   }
   //#endregion
 
-  open() {
+  public open(): void {
     this.isOpen.set(true);
     this.changeBackdrop();
   }
 
-  close() {
+  public close(): void {
     this.isOpen.set(false);
     this.changeBackdrop();
   }
 
-  toggle() {
+  public toggle(): void {
     this.isOpen.set(!this.isOpen());
     this.changeBackdrop();
   }
 
   // If isOpen changes, add or remove template
-  changeBackdrop() {
+  public changeBackdrop(): void {
     if (this.isOpen()) {
       this.createTemplate();
     } else {
       this.destroyTemplate();
     }
   }
 
-  private createTemplate() {
-    if (this.embeddedView) {
-      this.destroyTemplate();
-    }
-
-    this.embeddedView = this.viewContainer.createEmbeddedView(this.template());
-  }
-
-  private destroyTemplate() {
-    this.embeddedView?.destroy();
-  }
-
-  onKeydownHandler(event: KeyboardEvent) {
+  protected onKeydownHandler(event: KeyboardEvent): void {
     if (event.key === 'Escape') {
       this.close();
     }
   }
 
-  onBackdropClick(event: MouseEvent) {
+  protected onBackdropClick(event: MouseEvent): void {
     if (event.target == event.currentTarget && this.isDismissable()) {
       this.close();
     }
   }
+
+  private createTemplate(): void {
+    if (this.embeddedView) {
+      this.destroyTemplate();
+    }
+
+    this.embeddedView = this.viewContainer.createEmbeddedView(this.template());
+  }
+
+  private destroyTemplate(): void {
+    this.embeddedView?.destroy();
+  }
 }