Scripting WIP (#70)

* Scripting introduced

* AppImage workflow fixes

* AppImage workflow simplified

* README.md update

* README.md update

* small fix

src/voxels/Chunks.h

@@ -54,6 +54,7 @@ public:
 	glm::vec3 rayCastToObstacle(glm::vec3 start, glm::vec3 dir, float maxDist);
 
 	const AABB* isObstacle(float x, float y, float z);
+    bool isSolid(int x, int y, int z);
 
 	// does not move chunks inside
 	void _setOffset(int x, int z);