feat: describe what the app shows as a view

A view is a camera, data layers, visual style, map imagery and an aircraft,
military aircraft or satellite to follow, written in the share-link format
the app already restores. gods-eye-view/view builds, encodes and decodes one,
and share links take their style names from it. open_in_gods_eye_view now
builds its link from a full view: an area or camera, layers, style, map and
something to follow.

scripts/package-boundaries.json

@@ -2038,7 +2038,8 @@
       "src/data/infrastructureOverlayEntry.js",
       "src/sources/infrastructureData.js",
       "src/tools/functions.js",
-      "src/voice/actionSchemas.js"
+      "src/voice/actionSchemas.js",
+      "src/view/index.js"
     ],
     "external": [
       "hls.js",
@@ -3131,7 +3132,8 @@
       "src/data/layerSnapshot.js",
       "src/data/feedState.js",
       "src/loadingFeedback.js",
-      "src/data/installationFeedback.js"
+      "src/data/installationFeedback.js",
+      "src/view/index.js"
     ],
     "external": ["satellite.js"]
   },
@@ -3211,5 +3213,14 @@
       "src/sources/eventPacks.js"
     ],
     "external": ["@mapbox/vector-tile", "pbf"]
+  },
+  "view": {
+    "exports": ["./view"],
+    "modules": [
+      "src/view/index.js",
+      "src/data/layerState.js",
+      "src/data/layerStateTokenReservations.json"
+    ],
+    "external": []
   }
 }