smb/client: autogenerate SMB1 DOS/SRV to POSIX error mapping

smb/client: autogenerate SMB1 DOS/SRV to POSIX error mapping

Extend the `gen_smb1_mapping` script to support generating sorted POSIX
error mapping tables for both ERRDOS and ERRSRV classes at compile time.

The script parses annotations from smberr.h to generate smb1_err_dos_map.c
and smb1_err_srv_map.c, which are included as the contents of the arrays
mapping_table_ERRDOS[] and mapping_table_ERRSRV[], respectively.

This ensures that the mapping logic remains synchronized with the source
headers and prepares for faster error lookups using binary search in the
future.

Signed-off-by: Huiwen He <hehuiwen@kylinos.cn>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>