v2.7.4: Named location presets and tappable nearest-airport ticker

Location presets can now optionally be given a name (e.g. "Home"),
shown in the overview instead of the raw coordinates. The
nearest-airport ticker on the Location Presets screen is now
tappable (shown with a thin green border) and adds that airport
directly as a new preset with its name and coordinates, using the
existing local airport database on the SD card - no internet lookup
needed. AirportLookup::findNearest() now also returns the found
airport's own lat/lon for this purpose.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/i18n_en.h

@@ -195,6 +195,10 @@ static const char* const I18N_EN[] = {
 
     "Warning!!!",
     "The logbook permanently saves every visible aircraft to the SD card. To stop it filling up unnoticed and slowing down the logbook menus, it automatically switches off again after 24 hours.",
+    "Name (optional):",
+    "Skip name",
+    "Presets full - remove one first",
+    "When adding a preset you can give it a name (e.g. \"Home\"), which is then shown in the overview. Tap the nearest-airport ticker to add it directly as a new preset with its name.",
 };
 
 static_assert(sizeof(I18N_EN) / sizeof(I18N_EN[0]) == (size_t)StringId::COUNT,