Fix serialization pub key

[esabedo]

Currently, EVP_PKEY_print_public specifies an incorrect key class for the generated EVP_PKEY.
Now selection is also used to get the key class.

[Jakuje]

Do you have example outputs and reproducer that could be used in the tests to make sure we do not regress?

[esabedo]

1. When receiving information about the public key (EVP_PKEY_print_public), the information was output in the following format:

PKCS11 RSA Public Key (1024 bits)
    Modulus:
        00:d0:84:e1:59:fa:69:3d:38:54:92:7c:77:a9:74:
        5e:9f:4d:e9:f7:12:9a:ab:89:77:bf:c5:d7:63:e5:
        9b:16:89:a6:cb:c6:cd:71:16:ed:da:3c:93:a4:76:
        63:6d:65:99:e8:02:40:80:86:0e:92:3f:3a:5e:51:
        fe:ba:86:aa:c7:45:cc:30:c1:61:c0:7f:7b:fa:af:
        78:54:8e:4b:09:03:70:fc:e1:61:ae:3c:88:ba:f3:
        dc:a0:8c:6d:b4:be:da:af:74:26:a9:ca:b1:0e:c3:
        7e:9c:c2:84:36:86:4e:e5:37:31:b3:6b:2a:c4:b2:
        21:a8:e6:e0:64:8d:03:dd:53
    Exponent: 65537 (0x10001)
    URI pkcs11:model=Abracadabra;manufacturer=Abracadabra%20Co.;serial=44444444;token=Test%20custom;id=%67%6C%6F%62%61%6C%52%53%41%31%30%32%34%4B%65%79;type=private

In this output, we are specifically interested in the type=private part.
However, this is not true, since it was the public key that was requested. After this fix, the output is the expected type=public.

2. A bug has also been fixed with the release of the object's memory (free), for which the memory is allocated using openssl.

A commit with test has also been added