Empty pallet production

Shop category: Production Sites
Price: $60,000
Daily maintenance: $250

Recipes:
1. empty pallets required in productions:
Input: - 2.5 boards + 1 woodbeam
Output: - 1 pallet + 0.5 woodchips
Cycles per hour: 10
Production costs per hour: $25

2. empty pallet boxes required in productions:
Input: - 4 boards + 2 planks + 1 woodbeam
Output: - 1 empty pallet box + 0.75 woodchips
Cycles per hour: 5
Production costs per hour: $25

Empty pallets and empty pallet boxes can also be purchased at the production building, even if the production is not owned
Surplus production can be sold at the farmers' market, for example.

**Changelog 1.1.0.3**
- Fixed LUA call stacks with empty pallets.

**Changelog 1.1.0.2**
- Empty pallets can be picked up again with forks.

**Changelog 1.1.0.1**
- CPU mesh warnings fixed

**Changelog 1.1.0.0**
- Tensionbelt position empty pallet box fixed.