wip: Image Search, Bitmap and PNG savings, and test/build updates.

[octalmage]

It's wild looking at 10 year old code you wrote.

This is the first pass at the long, long awaited image searching. Find an image on the screen, or find an image in another image, it's basically the same thing.

const robot = require('robotjs');

const screen = robot.screen.capture();
const post = robot.image.load('./post.bmp');

screen.clickImage(post);

It looks something like that, I added a clickImage helper to simplify dealing with higher resolution displays where the captured images might be 2x the actual screen coords, but clickImage is kinda a weird concept. it's more like, click on screen, where the image is found in this image.

This is the long form example:

const robot = require('robotjs');

const screen = robot.screen.capture(); 
const post = robot.image.load('./post.bmp');

const match = screen.findImage(post);
if (match) {
  const point = screen.toScreenPoint(match, post);

  robot.moveMouse(point.x, point.y);
  robot.mouseClick();
}

Going to spend more time thinking about the public API, but this is a start!