feat: CRUD admin for skills and teams

components/admin/management/index.ts

@@ -0,0 +1,6 @@
+// Composants réutilisables pour la vue arborescente
+export { TreeViewContainer } from "./tree-view-container";
+export { TreeCategoryHeader } from "./tree-category-header";
+export { TreeItemRow } from "./tree-item-row";
+export { TreeSearchControls } from "./tree-search-controls";
+export { TeamMetrics } from "./team-metrics";