Add place to store recipe tweaks

Stolen from https://github.com/Nincraft/NincraftElectricBoogaloo2RevengeoftheFallen/blob/master/scripts/How%20to%20add%20Minetweaker%20Recipes.md
Make Carpenter's Barrier/Fence Consistent

They should now require the same relative materials as a normal fence would, and gives out the same.  This would eliminate Carpenter's Blocks from being a superior choice when blocking off areas.
Tweak Carpenter's Daylight Sensor to be Consistent

This way players still need to get to the nether before they can acquire one.

Closes #4