TerrainSlabs & TrailMod compatibility patch

<p>Compatibility patch for <a href="https://mods.vintagestory.at/terrainslabs">Terrain Slabs</a> and <a href="https://mods.vintagestory.at/trailmodupdated">Trail Mod Updated</a>&nbsp;</p> <p>&nbsp;</p> <p>I have to warn you that I am not using Trail Mod personally and maintaning a compatibility is a low priority because of that.</p> <p>I will still try to fix major bugs/crashes if you report them, though. Please be as descriptive as possible (crash/error logs, steps to reproduce, mod list, etc)</p>