* server_certificate_verifier extended to reuse built-in verifier
* code cleanup and SSLVerifierResponse enum clarification as per @falbrechtskirchinger comment
* cleanup
* clang-format
* change local var verification_status_ declaration to auto
* change local var verification_status_ to verification_status
* clang-format
* clang-format
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Co-authored-by: UrosG <uros@ub330.net>