Good morning, Boston. Happy National Chocolate Milkshake Day. Here are the five things you need to know in local business news to start your Friday. Hannah Green reports that semiconductor giant Analog Devices is teaming up with Flagship Pioneering to build new startups with the aim of developing what it calls a "fully digitized biological world." Hannah also reports that a publicly traded Cambridge biotech disclosed in a securities filing that it plans to move its corporate headquarters to…