feat: allow partial setting of window bounds (#15677)

Extend the existing win.setBounds functionality by allowing developers to partially update bounds without being forced to pass in all four bounds values. No existing functionality is altere

lib/browser/api/browser-window.js

@@ -17,6 +17,15 @@ BrowserWindow.prototype._init = function () {
   // Create WebContentsView.
   this.setContentView(new WebContentsView(this.webContents))
 
+  const nativeSetBounds = this.setBounds
+  this.setBounds = (bounds, ...opts) => {
+    bounds = {
+      ...this.getBounds(),
+      ...bounds
+    }
+    nativeSetBounds.call(this, bounds, ...opts)
+  }
+
   // Make new windows requested by links behave like "window.open"
   this.webContents.on('-new-window', (event, url, frameName, disposition,
     additionalFeatures, postData,