screen.find neglects offsets when providing a search region #160

Version
1.4.3-next.20200813090951

Short overview
When providing a search region to screen.find the resulting Region is off.

Issue occurs on

• Virtual machine
• Docker container
• Dev/Host system

Detailed error description
When providing a search region to screen.find, the returned Region is relative to the provided search region.
It does not incorporate offsets provided by the search region, so the result does not properly translate onto desktop space.

Steps to reproduce error

• Define a new Region containing your target image, e.g. const searchRegion = new Region(300, 200, 500, 500);
• Search for the target image, providing a search region: const detectedRegion = await screen.find("target_image.png", {searchRegion})
• Highlight the detected region: highlight(detectedRegion)
• -> Highlighted region is off by x and y coordinates of our searchRegion
• Add the offset to the result region:

const correctedRegion = new Region(searchRegion.left + detectedRegion.left, searchRegion.top + detectedRegion.top, detectedRegion.width, detectedRegion.height);
highlight(correctedRegion);

• -> Correct region is highlighted
  Additional content

Please provide any (mandatory) additional data to reproduce the error (Dockerfiles etc.)

const { screen, Region } = require("@nut-tree/nut-js");

(async () => {
    const searchRegion = new Region(300, 400, 500, 500);
    const detectedRegion = await screen.find("image.png", {searchRegion})
    await screen.highlight(detectedRegion);
    const correctedRegion = new Region(
        searchRegion.left + detectedRegion.left,
        searchRegion.top + detectedRegion.top,
        detectedRegion.width,
        detectedRegion.height
    );
    await screen.highlight(correctedRegion);
})();