Originally, special config 'bind' is used for socket and TLS, however
multiple addresses handling is also workable for RDMA(QUIC in the
future). Abstract bind option as helper functions to apply more
connection types.

rewriteConfigBindOption is a local function, declare it as 'static'
function.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>

Socket family use close() syscall to close listener, however RDMA has
another style. Use an abstract function handler instead of hard code
syscall style.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>

Move 4 parameters from valkey-rdma.so to valkey-server, keep RDMA
listener similar to TCP/TLS. Also prepare to build Valkey Over RDMA
into builtin.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>

Support RDMA builtin and module together. To build a builtin version:
 $ make BUILD_RDMA=yes

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>