Fixed typo in Log Wall addon's name

- Reorganized File structure a bit
- Added LogWall Addon mod, this addon allows you to also customize cost of the Log Wall, it might cause compatibility problems with other mods, thats why its an addon mod
- Added Wooden Door
- Added Wood Double Door

Add
- Big Wire Fence double door
- Big Pole Fence
- Big Pole Fence single door
- Big Pole Fence double door
- Log Wall

First PoC