AIM Hbi

This is a remake of aim_hbi, which was the first map the author created which had a lot of room for improvement. Overall idea of the map is still the same, just fixed all the small things and added a few things.

Main points of v2:
- New skybox texture.
- Pit/hole splitting map in half which has a trigger to kill you if you fall in.
- New floor/wall textures.
- Thicker walls to avoid spamming.
- Different file name to avoid overwriting issues.
- Bigger layout + hole in the middle should help make this better for DM servers.
- AK / Deagle / Kevlar / Helm