makes moretrees game agnostic (#37)

* at least boot into minetest

* start using some xcompat materials

* transition some more materials

* translate and default lock some more stuff

* handle more stuff

* translate leaves and bugfix jungle nodes near

* fallback on moretrees spaling texture when default not present

* fix https://github.com/mt-mods/moretrees/pull/37#discussion_r1615147786

.luacheckrc

@@ -21,8 +21,8 @@ read_globals = {
 	string = {fields = {"split"}},
     table = {fields = {"copy", "getn"}},
 
-	"biome_lib",
 	"stairsplus",
 	"stairs",
 	"doors",
+	"xcompat",
 }