Mining rework part 2, rebalance.

- Added a couple of simple debug verbs.
- Drill rigs now harvest ore at a third of the speed.
- Drill rigs consume half as much charge.
- Drill rig storage has been doubled.
- Ore distribution has been reworked and made more specific across zones.
- Coal and sand are now much more common.
- Osmium is also now more common.
- An ore scanner has been added to the mining outpost that shows a rough idea of the nearby ores.