feat(cctv): add the Autostrada del Brennero (A22) motorway webcams

Closes bilawalsidhu/gods-eye-view#155. The first Italian cameras: the 13
webcams along the A22 from the Brenner Pass to Modena.

The camera list is one keyless request to the Open Data Hub (NOI Techpark)
tourism API, which republishes Autobrennero's own list with coordinates
and kilometre markers. Frames are the operator's stills, refreshed about
once a minute, and only each camera's own WebCamImg/km<N>.jpg is
registered. The catalog fetch refuses redirects and is size-capped.

The road climbs from ~20 m in the Po valley to ~1,370 m at the Brenner
Pass, so ground elevation comes from a per-kilometre table sampled from
the Copernicus GLO-90 DEM instead of one flat prior. Headings use the
id-hash fallback at low confidence. CCTV_A22_ENABLED=0 disables the pack.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

CHANGELOG.md

@@ -2,6 +2,15 @@
 
 ## [Unreleased]
 
+- Add the Autostrada del Brennero (A22, Brenner–Modena) motorway webcams as a
+  CCTV pack, the first Italian cameras. The 13-camera list is one keyless
+  request to the Open Data Hub (NOI Techpark) tourism API, which republishes
+  Autobrennero's own list with coordinates; frames are the operator's stills,
+  refreshed about once a minute and pinned to each camera's own `km<N>.jpg`.
+  Each camera's ground elevation comes from a per-kilometre DEM table, since
+  the road climbs from the Po valley to the Brenner Pass. `CCTV_A22_ENABLED=0`
+  disables the pack. Closes #155.
+
 - Add Norway's road cameras from Statens vegvesen as a CCTV pack. The camera
   list is one keyless GeoJSON request to the agency's OGC API view of its
   DATEX 3.1 CCTV table, so no DATEX account is needed. Every working camera