The actual type of targetId is uint64_t. In set-preferred-target-order cmd it is parsed as uint32_t. An error will be reported when using set-preferred-target-order cmd.
This allows us to issue multiple command in one process. The --fdb-cluster-file flag is removed to reuse the fdb config from config file.
Resolve the SIGFAULT if the specified fdb_cluster_file from flag does not exist.
When compiled with new toolchain that implements std::format_to, it become
ambiguous on which one should be called. Due to argument-dependent lookup, even
if we are not `using namespace std;` the std version is still considered. So
let's add fmt:: to avoid ambiguous compilation error.
