report key size used in certificate server

Extend the report to show also server certificate key size:
prio  ciphersuite              protocols                    pubkey_size  pfs_keysize
1     ECDHE-RSA-AES128-SHA256  TLSv1.2                      2048         ECDH,P-256,256bits
2     ECDHE-ECDSA-AES128-SHA   SSLv3,TLSv1,TLSv1.1,TLSv1.2  256          ECDH,P-256,256bits
3     AES128-SHA               SSLv3,TLSv1,TLSv1.1,TLSv1.2  2048
4     RC4-MD5                  SSLv3,TLSv1,TLSv1.1,TLSv1.2  2048
5     EXP-RC4-MD5              SSLv3,TLSv1,TLSv1.1,TLSv1.2  2048         RSA,512bits
Report the signature type used on server certificate

Parse the certificate used by server and report the signature used:

prio  ciphersuite              protocols                    pubkey_size  signature_algorithm    pfs_keysize
1     ECDHE-RSA-AES128-SHA256  TLSv1.2                      2048         sha1WithRSAEncryption  ECDH,P-256,256bits
2     ECDHE-ECDSA-AES128-SHA   SSLv3,TLSv1,TLSv1.1,TLSv1.2  256          ecdsa-with-SHA512      ECDH,P-256,256bits
3     AES128-SHA               SSLv3,TLSv1,TLSv1.1,TLSv1.2  2048         sha1WithRSAEncryption
4     AECDH-RC4-SHA            SSLv3,TLSv1,TLSv1.1,TLSv1.2  0            None                   ECDH,P-256,256bits
5     RC4-MD5                  SSLv3,TLSv1,TLSv1.1,TLSv1.2  2048         sha1WithRSAEncryption
6     EXP-RC4-MD5              SSLv3,TLSv1,TLSv1.1,TLSv1.2  2048         sha1WithRSAEncryption  RSA,512bits