feat: Set SQL_ATTR_NON_HEXCCSID by default

[abmusse]

Resolves #135

[abmusse]

I ran into issue compiling error stating SQL_ATTR_NON_HEXCCSID' was not declared in this scope.

make: Entering directory '~/nodejs-idb-connector/build'
  CXX(target) Release/obj.target/db2ia/src/db2ia/db2ia.o
../src/db2ia/db2ia.cc: In function 'Napi::Object InitAll(Napi::Env, Napi::Object)':
../src/db2ia/db2ia.cc:56:39: error: 'SQL_ATTR_NON_HEXCCSID' was not declared in this scope
   sqlReturnCode = SQLSetEnvAttr(envh, SQL_ATTR_NON_HEXCCSID, &param, 0);
                                       ^~~~~~~~~~~~~~~~~~~~~

I searched /usr/include/sqlcli.h and sure enough it was not defined in that file.

@kadler Is SQL_ATTR_NON_HEXCCSID defined somewhere else?

[abmusse]

I noticed with python ibm_db connector there is a check for it:

#ifndef SQL_ATTR_NON_HEXCCSID
#define SQL_ATTR_NON_HEXCCSID 10203
#endif

I just find it weird that its documented here but not defined in the header file?

[kadler]

I think the header file missed getting updated or it is only in a newer IBM i release.