Added some requested features:
- Added so turrets cannot be meshed. Acts as if Structure Placement Collision is on.
- Added config option to block all structures from being placed in water. Requires new config option (default off)
- Enables the ARK default structure placement check for beds/teleporters. For these items it will still look green, but under the hood, it'll run the same checks as if Structure Placement Collision is ENABLED + my custom double checks!