Orm extension

[ArchNemSyS]

A simple extension to the templates in orm.h to allow 20 columns

Thought others may find this useful even if it is a little hard to read needs testing before hitting stable but I haven't had any issues yet

[victorstewart]

you could replace all of this with a single variadic template method and a c++17 fold expression

template <typename...Ts> 
void use(Ts&&... ts)
{
   (bindParam(UOrmTypeHandler<Ts>(ts)), ...);
}