Convert all projects to PlatformIO

- JC3636W518 sketches: pioarduino 51.03.05 (Arduino core 3.0.5), ESP32-S3
  16MB QIO / OPI PSRAM, vendor libs via lib_extra_dirs, per-project lv_conf.h
- display_gif_embedded uses default_16MB.csv (firmware 3.4 MB > huge_app)
- elm327_wifi_bridge: espressif32 6.10.0 on esp32dev, pinned lib_deps
- elmulator: library in lib/, one env per example, duplicate copies removed
- .ino -> src/main.cpp, headers/lv_conf.h -> include/

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

10-OBD-Display-2024/elm327_wifi_bridge/platformio.ini

@@ -0,0 +1,18 @@
+; ELM327 -> WiFi bridge — runs on a CLASSIC ESP32 (needs Bluetooth Classic, which the ESP32-S3 lacks)
+; Original note: "needs esp32 2.0.* in boards manager" -> official platform 6.10.0 = Arduino core 2.0.17
+
+[env:esp32dev]
+platform = espressif32@6.10.0
+board = esp32dev
+framework = arduino
+
+; BluetoothSerial + WiFi + web server do not fit the default 1.2 MB app partition
+board_build.partitions = huge_app.csv
+
+lib_deps =
+    powerbroker2/ELMduino@3.4.1
+    esphome/ESPAsyncWebServer-esphome@3.4.0
+
+; upload_port = COMxx   ; set to the classic ESP32's port (COM21 is the JC3636W518)
+monitor_speed = 115200
+monitor_filters = esp32_exception_decoder