CYD-E28R32T Implementation (#317)

- Add implementation for CYD-E28R28T. This implementation has the SD card working, using the same driver as the CYD-2432S028R.
- Edit .gitignore for some missing things.
- run chmod +x on some build scripts
- Make EspLcdDisplay's reference public for access from drivers (needed for driver St7789i8080)
> ```class EspLcdDisplay : public tt::hal::display::DisplayDevice {```

.github/workflows/build-firmware.yml

@@ -27,6 +27,15 @@ jobs:
         with:
           board_id: cyd-2432s028r
           arch: esp32
+  cyd-e32r28t:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: "Build"
+        uses: ./.github/actions/build-firmware
+        with:
+          board_id: cyd-e32r28t
+          arch: esp32
   cyd-2432s032c:
     runs-on: ubuntu-latest
     steps:
@@ -179,4 +188,4 @@ jobs:
         uses: ./.github/actions/build-firmware
         with:
           board_id: waveshare-s3-touch-43
-          arch: esp32s3
+          arch: esp32s3