Tech mogul Elon Musk has been crashing at Mar-a-Lago since Donald Trump got re-elected on Nov. 5, with the close confidant to the president-elect paying upward of $2,000 per night to sleep in an elite suite, according to a new report. … Musk — the richest man in the world — had been galivanting around the estate, dining with the soon-to-be 47th president’s family, pausing for lunches on the posh balcony and even going out on the golf course with Trump’s granddaughter Kai. … The X owner has also been purportedly looped in on phone conversations with the president-elect and...