Allow to show tile boundary in debug.html

[sharkAndshark]

Something like this

[nyurik]

I think @upsicleclown had some experience with this?

P.S. and yes, i agree that the debug screen should show tile boundaries

[sharkAndshark]

A method in maplibre:

map.showTileBoundaries = true;

• The map will render an outline around each tile and the tile ID
• The uncompressed file size of the first vector source is drawn in the top left corner of each tile, next to the tile ID
  Seems maputnik used this either.

[nyurik]

Yes, good idea