**Use case**
Check and verify server's SSL certificate

**Describe the solution you'd like**
Some function like showCertificate to populate standard certificate fields...

**Additional context**
Addition following #36583

void registerFunctionChar(FunctionFactory &);
void registerFunctionsComparison(FunctionFactory &);
void registerFunctionsConditional(FunctionFactory &);
void registerFunctionsConversion(FunctionFactory &);
void registerFunctionCastOrDefault(FunctionFactory &);
void registerFunctionsDateTime(FunctionFactory &);
void registerFunctionsEmbeddedDictionaries(FunctionFactory &);
void registerFunctionsExternalDictionaries(FunctionFactory &);
void registerFunctionsExternalModels(FunctionFactory &);
void registerFunctionsFormatting(FunctionFactory &);
void registerFunctionHashID(FunctionFactory &);
void registerFunctionsHashing(FunctionFactory &);
void registerFunctionsHigherOrder(FunctionFactory &);
void registerFunctionsLogical(FunctionFactory &);
void registerFunctionsMiscellaneous(FunctionFactory &);
void registerFunctionsRandom(FunctionFactory &);
void registerFunctionsReinterpret(FunctionFactory &);
void registerFunctionsRound(FunctionFactory &);
void registerFunctionsString(FunctionFactory &);
void registerFunctionsStringArray(FunctionFactory &);
void registerFunctionsStringSearch(FunctionFactory &);
void registerFunctionsStringRegexp(FunctionFactory &);
void registerFunctionsStringSimilarity(FunctionFactory &);
void registerFunctionsStringTokenExtractor(FunctionFactory &);
void registerFunctionsURL(FunctionFactory &);
void registerFunctionsVisitParam(FunctionFactory &);
void registerFunctionsMath(FunctionFactory &);
void registerFunctionsGeo(FunctionFactory &);
void registerFunctionsIntrospection(FunctionFactory &);
void registerFunctionsNull(FunctionFactory &);