feat: add get users route

internal/admin/routes.go

@@ -31,5 +31,7 @@ func (h *AdminHandler) RegisterRoutes(router chi.Router) {
 		r.Patch("/api-services/{id}", h.RegenerateApiServiceSecret)
 		r.Put("/api-services/{id}", h.UpdateApiService)
 		r.Patch("/api-services/toggle/{id}", h.ToggleApiService)
+
+		r.Get("/users", h.GetUsers)
 	})
 }