Extending error printing for silent wolfssl errors

[JeremiahM37]

Added WOLFPROV_MSG_DEBUG_RETCODE with the function name that is failing and the rc dump.

[aidangarske]

You should find a place to mention that to see the rc from wolfssl you must add WP_LOG_DEBUG to the WOLFPROV_LOG_LEVEL_FILTER. Perhaps in wp_logging.h like in wolfProv_LogType

[padelsbach]

There are now 240 logs of the form WOLFPROV_MSG_DEBUG(WP_LOG_DEBUG, "foo() failed with rc=%d", rc);

Instead, we could add a function in wp_logging.c which unifies this for DRYness and code size. Eg:

void WOLFPROV_MSG_DEBUG_RETCODE(int component, const char* func_name)
{
    WOLFPROV_MSG_DEBUG(WP_LOG_DEBUG, "%s failed with rc=%d", func_name, rc);
}

[padelsbach]

Nicely done