MBEDTLS_SSL_DTLS_CONNECTION_ID macro

\def MBEDTLS_SSL_DTLS_CONNECTION_ID Enable support for the DTLS Connection ID (CID) extension, which allows to identify DTLS connections across changes in the underlying transport. The CID functionality is described in RFC 9146. Setting this option enables the SSL APIs `mbedtls_ssl_set_cid()`, mbedtls_ssl_get_own_cid()`, `mbedtls_ssl_get_peer_cid()` and `mbedtls_ssl_conf_cid()`. See the corresponding documentation for more information. The maximum lengths of outgoing and incoming CIDs can be configured through the options - MBEDTLS_SSL_CID_OUT_LEN_MAX - MBEDTLS_SSL_CID_IN_LEN_MAX. Requires: MBEDTLS_SSL_PROTO_DTLS Uncomment to enable the Connection ID extension.