mbedTLS: implement CURLOPT_SSL_CIPHER_LIST option

Use a lookup list to set the cipher suites, allowing the
ciphers to be set by either openssl or IANA names.

To keep the binary

mbedTLS: implement CURLOPT_SSL_CIPHER_LIST option

Use a lookup list to set the cipher suites, allowing the
ciphers to be set by either openssl or IANA names.

To keep the binary size of the lookup list down we compress
each entry in the cipher list down to 2 + 6 bytes using the
C preprocessor.

Closes #13442

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