Add script to generate Lens bindings

generate_lens_bindings.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+if [ -z "$1" ]; then
+    echo "Usage: $0 <path_to_proto_files>"
+    exit 1
+fi
+
+PROTO_PATH="$1"
+
+mkdir -p owocr/py_lens
+protoc "--proto_path=$PROTO_PATH" --python_out=owocr/py_lens $PROTO_PATH/*.proto
+sed -i '' "s/import lens_overlay/import owocr.py_lens.lens_overlay/" py_lens/*