add missed elevate resources
implement our own DatabaseRenderer (only for vector format) — TileServerDatabaseRenderer — mapsforge is not thread-safe —
1) we cannot and it is funny to have render theme instance per database renderer.
2) label clipping — tile dependencies is not thread safe and in any case current implementation will be bottleneck.

 Stroke width scale factor depends on zoom, but we cannot set it on each "render tile" invocation - render theme must be immutable, it is client reponsibility to do scaling.

 Font scale factor depends on client display — it is also client reponsibility.

 Label clipping is still actual in case of raster tile format (png/webp), but in case of vector format it will be fixed (because we can draw text in the whole canvas, we are not restricted to tile boundary)