feat(cctv): add Quebec, Ottawa, and World feeds

changelog.d/1506-taiwan-highway-cctv-fallback.md

@@ -1,3 +1,6 @@
-- Add a keyless Highway Bureau fallback for Taiwan CCTV when the Freeway Bureau
-  catalog is unavailable, keeping official camera coordinates and serving
-  bounded snapshots from MJPEG feeds (InoukT, #1506).
+- Expand CCTV coverage with a keyless Taiwan Highway Bureau fallback, Québec
+  camera catalog and map preview, Ottawa traffic cameras, and 2,396 curated
+  image-backed cameras from Iceland, Oregon, and Japan (InoukT, #1506).
+- Keep Québec 511 video browser-only, enforce provider-specific frame refresh
+  limits, and report recognized MLIT maintenance images as degraded instead of
+  healthy camera snapshots.