feat: add a license plate reader camera tool

Add find_alpr_cameras over the layer's OpenStreetMap camera extracts:
cameras in a US or Canadian area of at most 3° per side, nearest first,
with operator, manufacturer and facing direction, and the source's
attribution. Areas outside coverage or too wide are reported.

scripts/format-scope.json

@@ -882,5 +882,6 @@
   "src/tools/localRoute.test.mjs",
   "src/tools/queries/atmosphere.test.mjs",
   "src/tools/queries/imagery.test.mjs",
-  "src/tools/queries/cables.test.mjs"
+  "src/tools/queries/cables.test.mjs",
+  "src/tools/queries/surveillance.test.mjs"
 ]