Loader Redux for Space Exporation

Since Space Loader Redux by Alexsogge is apparently no longer maintained and had potential MP desync from calling LR API in on_load, I made another demo mod. Hopefully that should be enough to show how easy it is to add loaders with LR.

Adds loaders for Space Exporation using the Loader Redux API

• loaders match speed setting of SE belts
• loader recipes are similar to SE splitters
• migrate existing loaders from Space Loader Redux by Alexsogge