Added empty oil jars inventory following such change in the main mod.

Put T2 plates as first crafting component to avoid eating resources by crafter.

Halved fuel consumption of the mechanical engine following similar change to the standard one.

Added MM fuel specs.
Added mechanical engine.

- Added tiny engine.
- Changed recipes for the ones using intermediary components (plates/pipes).
- Replaced upgrade recipes with disassembly ones.

Updated to adapt to the main mod overhaul.