Compatibility patch between Nullius and Blueprint Shotgun.

Seamlessly integrates the BP shotgun and ammo into Nullius as the "Construction gun" and "Construction canisters".

Blends into Nullius early game tech, and uses new balanced recipes. (Configurable canister efficiency)

Optionally adds the construction gun and some canisters to the inventory on new game start (on by default).

Note: removes the techs from BP Shotgun mod and instead adds the recipes to existing Nullius techs. The recipe ingredients are properly adjusted for Nullius irrespective of the "Remove wood from ingredients" mod setting -- all the other mod settings from BP shotgun work as expected for the Construction gun.
I recommend adding some cheat bonus since we do not include the 2 canister bonus techs. Each tech originally just added +1 bonus, but even a "cheat bonus" of 5+ feels balanced, just QoL building fun to manually assist your starter bots.