pubg map: built-in intel layers (vehicle spots, drops, loot density, Blue Chip towers, secret rooms) per map

Read-only layers from static/pubg-intel/<map>.v1.json (scripts/build-pubg-intel.py):
positions from pubg.gs (game level files), drops from guides, secret rooms and Deston
keys as approximate rings on the named place. Layer panel (K), per-player choices in
localStorage, drawn below room markers; clicks still place markers.

.prettierignore

@@ -25,3 +25,6 @@ static/vendor/
 
 # Generated drizzle snapshots
 drizzle/*/snapshot.json
+
+# Generated PUBG map intel (scripts/build-pubg-intel.py)
+static/pubg-intel/