initial bookworm support

scripts/install_helpers.sh

@@ -0,0 +1,28 @@
+# this should only contain functions and assignments, ie source install.sh should not have side effects.
+
+get_tf_whl () {
+  BASE_URL=https://github.com/Nachtzuster/BirdNET-Pi/releases/download/v0.1/
+
+  PY_VERSION=$(python3 -c "import sys; print(f'{sys.version_info[0]}{sys.version_info[1]}')")
+  case "${PY_VERSION}" in
+    39)
+      WHL=tflite_runtime-2.11.0-cp39-none-linux_aarch64.whl
+      ;;
+    310)
+      WHL=tflite_runtime-2.11.0-cp310-none-linux_aarch64.whl
+      ;;
+    311)
+      WHL=tflite_runtime-2.11.0-cp311-cp311-linux_aarch64.whl
+      ;;
+    *)
+      echo "No tflite version found"
+      WHL=''
+      ;;
+  esac
+  if [ -n "$WHL" ]; then
+    {
+      curl -L -o $HOME/BirdNET-Pi/$WHL $BASE_URL$WHL
+      sed "s/tflite_runtime.*/$WHL/" $HOME/BirdNET-Pi/requirements.txt > requirements_custom.txt
+    }
+  fi
+}