Merge branch 'main' into denis/cockpit-subject-providers

changelog.d/1698-new-strings-translations.md

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+- Fix the translations of the strings added since the last review (News,
+  Data Library, Wildlife Sightings, Shipwrecks, Rail, the vessel and orbital
+  cockpits) in all twelve languages: neutral side labels and counts no longer
+  break the sentence, terms follow each glossary, and Traditional Chinese
+  follows Simplified Chinese again (German, @gekh, #1698).

changelog.d/1714-fleet-models.md

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+- Draw every 3D model from the project's procedural fleet set: 121 models
+  (about 2 MB, MIT like the code) chosen per vehicle by type and drawn life
+  size, replacing the eight third-party aircraft models. Flights, Military
+  Flights and Local ADS-B pick a model by ICAO type, class and emitter
+  category; Vessels, Transit and Rail now draw models too, under the same 3D
+  toggle and distances, a ship at its AIS length and beam and a tram, bus or
+  train in its mode or category colour. The whole set loads once when a layer
+  starts (samehkhamis, #1714).