Refactor Status to avoid large stack size in happy path

[PragmaTwice]

Follow the implementation of Status in RocksDB, google absl, doris and more, we refactor the Status to make it just a pointer (8 instead of 40 for libstdc++ std::string).

For happy path (OK status) with large probability, it benefits the performance.

[torwig]

LGTM.
Good job, @PragmaTwice!

[tisonkun]

There are still ICE:

lto1: internal compiler error: in add_symbol_to_partition_1, at lto/lto-partition.c:153
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-9/README.Bugs> for instructions.
lto-wrapper: fatal error: /usr/bin/g++ returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status

[PragmaTwice]

There are still ICE:

lto1: internal compiler error: in add_symbol_to_partition_1, at lto/lto-partition.c:153
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-9/README.Bugs> for instructions.
lto-wrapper: fatal error: /usr/bin/g++ returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status

sad

[PragmaTwice]

Will split this PR to multiple ones against ICE.