[Improvement] Open responsively app maximized

[jjavierdguezas]

I noticed that Responsively windows try to cover the screen height and width on start

responsively-app/desktop-app/app/main.dev.js

Lines 290 to 305 in 429610b

	const {width, height} = electron.screen.getPrimaryDisplay().workAreaSize;
	const iconPath = path.resolve(__dirname, '../resources/icons/64x64.png');
	mainWindow = new BrowserWindow({
	show: false,
	width,
	height,
	webPreferences: {
	nodeIntegration: true,
	nodeIntegrationInWorker: true,
	webviewTag: true,
	enableRemoteModule: true,
	},
	titleBarStyle: 'hidden',
	icon: iconPath,
	});

But (at least on windows) it leaves gaps:

Maybe it's just me, but I'd like more if it always opens maximized

We can use maximize() function