Function GET

Returns Promise<
    | NextResponse<
        {
            trainings: (
                {
                    employeeTrainings: ({ employee: (...) & (...) } & {})[];
                    files: {}[];
                } & {}
            )[];
            pagination: {
                page: number;
                limit: number;
                total: number;
                totalPages: number;
            };
            stats: {
                total: number;
                active: number;
                byType: number;
                upcoming: number;
            };
        },
    >
    | NextResponse<{ error: string }>,
>