Support scale for IN/OUT parameters

[mhewedy]

In parameters: https://github.com/mhewedy/spwrap/blob/7384f0c8651302533c695fdd411dc8f1f82edc36/src/main/java/spwrap/Caller.java#L230

Output parameters: https://github.com/mhewedy/spwrap/blob/7384f0c8651302533c695fdd411dc8f1f82edc36/src/main/java/spwrap/Caller.java#L239

The following snippet is from spring-jdbc

if (declaredParam.getScale() != null) {
	cs.registerOutParameter(sqlColIndx, declaredParam.getSqlType(), declaredParam.getScale());
}
else {
	cs.registerOutParameter(sqlColIndx, declaredParam.getSqlType());
}

[mhewedy]

for statement parameters see: org.springframework.jdbc.core.StatementCreatorUtils.setParameterValueInternal