Flexible helper scripts for a better integration in hypergrid environment.

An addition to NSL helpers scripts collection to allow better integration in hypergrid environment.


For now, it allows
- integration of two currency modules, DTL/NSL and Gloebit. The structure should allow to add more.
- per domain configuration

The next step (working on it these days):
- intelligent detection of the currently visited grid, to adapt helpers as much as possible to the foreign grid

The goal is to have a complete set of scripts, compatible with most use cases.

Developed for Speculoos.world grid, it should be fit other grids setups.