Lets people on limited data stop the Tankopedia from downloading 3D models automatically.
- Added an Automatically load 3D models switch to the settings page, on by default
- When off, the tank page hero shows a Load 3D model button where the loading bar sits
- Held back every model download on the tank page until requested, including the dynamic armor switcher and the gun flexibility visualizer
- Wrapped the tank sandbox in its own suspense boundary so the loading bar shows real progress instead of the whole page waiting on the model
- Measured loading progress from when each loading bar appears so it always starts empty
- Added the English strings; other languages fall back until translated
Fixes#311
Adds a **Peekaboo DPM** entry nested under DPM for single-shot guns, estimating damage per minute when only firing after resetting camouflage (or waiting out the reload, whichever is slower), assuming at least 10 seconds between shots.
- Shots per minute are capped at `60/10` for reloads faster than 10s, and fall back to `60/reload` otherwise
- The result is multiplied by the currently selected shell's damage and rounded
- An (i) icon next to the label opens a popover explaining the calculation
- The row is hidden for auto-loader/auto-reloader guns
- No percentile ranking bar is shown, since no dataset exists yet for this new stat