Drawable&Invisible fence

Hello!
This mods adds a standalone recolor with new meshes (but they are seemingly invisible) of two fences: "Fence for Window Shopping" (from Get to Work) and "Paneled Fence with Round Posts" (Base Game).

The first version based on "Fence for Window Shopping" is called: invisible_fence_small.
The second version based on "Paneled Fence with Round Posts" is called: invisible_fence_normal.

These two versions are a bit different. The second version (normal) removes fence posts when placed next to different fence. The first version (small) doesn't.