Merge pull request #19284 from Ziachnix:feature/js-qr-code-detector

Add QRCodeDetector to JavaScript Build

* ADD: js support for qrCodeDetector

- cherry picked commit to solve rebase error

* CHG. Revert haarcascade path

* FIX: Tests without images

* ADD: decodeCurved

* js(docs): don't require OPENCV_TEST_DATA_PATH

Co-authored-by: Alexander Alekhin <alexander.a.alekhin@gmail.com>

doc/js_tutorials/js_setup/js_setup/js_setup.markdown

@@ -138,6 +138,7 @@ Building OpenCV.js from Source
     python ./platforms/js/build_js.py build_js --cmake_option="-DOPENCV_EXTRA_MODULES_PATH=opencv_contrib/modules"
     @endcode
 
+
 Running OpenCV.js Tests
 ---------------------------------------
 
@@ -303,6 +304,12 @@ The example uses latest version of emscripten. If the build fails you should try
 docker run --rm -v $(pwd):/src -u $(id -u):$(id -g) emscripten/emsdk:2.0.10 emcmake python3 ./platforms/js/build_js.py build_js
 @endcode
 
+In Windows use the following PowerShell command:
+
+@code{.bash}
+docker run --rm --workdir /src -v "$(get-location):/src" "emscripten/emsdk:2.0.10" emcmake python3 ./platforms/js/build_js.py build_js
+@endcode
+
 ### Building the documentation with Docker
 
 To build the documentation `doxygen` needs to be installed. Create a file named `Dockerfile` with the following content: