Allow vertical axis particle rotation constraint

Use tables for adding particles, deprecate former way.

separate particles(pawner) definition, add default values, work with no
arguments

src/client.h

@@ -168,6 +168,7 @@ struct ClientEvent
 			f32 expirationtime;
 			f32 size;
 			bool collisiondetection;
+			bool vertical;
 			std::string *texture;
 		} spawn_particle;
 		struct{
@@ -184,6 +185,7 @@ struct ClientEvent
 			f32 minsize;
 			f32 maxsize;
 			bool collisiondetection;
+			bool vertical;
 			std::string *texture;
 			u32 id;
 		} add_particlespawner;