feat(journey): show the plan, what was recorded, the entries and the photos as layers of the journey map

Every journey map (the desktop aside, the phone screens and the shared page)
now carries four switches: Plan, Recorded, Entries and Photos, each with its
count, a spinner while it loads, the warning tone when it could not be read
and the reason when it has nothing to show. A switch only hides, in place:
the map is not rebuilt and keeps its view, and the choice is kept in this
browser per journey (per link on a shared page, by a hash of its token).

The plan draws the places the linked trips put on their days as hollow dashed
pins and the trips' GPX routes dashed; a place an entry was written about is
not drawn twice, the entry's pin carries a check instead. The stays a day
report was taken over from show as dots in the colour of their day. Marks on
one spot join into a disc with their number and open as a list; a picked
place or stay opens a card with its trip, days and times and leads to its
entry. A key beside the switches explains every pin and line and says that
a plan is no proof of a visit. The phone timelines now show the photos too.

The GPX routes come with the map's layers through the linked trips, read
only while the journey's track switch is on; the frozen /tracks answer stays
Studio's. The share settings on desktop and phone get Trip plan and Recorded
routes under Map, off by default and only switchable while the map is shared.

client/scripts/eslint-baseline.json

@@ -9,7 +9,7 @@
     "max-params": 35,
     "trek/store-without-selector": 69,
     "react-hooks/refs": 558,
-    "react-hooks/set-state-in-effect": 197,
+    "react-hooks/set-state-in-effect": 196,
     "@typescript-eslint/no-floating-promises": 167,
     "react-hooks/exhaustive-deps": 121,
     "@typescript-eslint/no-unused-vars": 129,