Stranger things have happened.Meghan Markle, 42, and Prince Harry, 38, have purchased the screen rights to the popular new release “Meet Me at the Lake” to turn it into a film for Netflix, The Post can confirm — and according to one PR expert, the project could “break records.” “Harry and Meghan are no strangers to attracting millions of eyes upon what they do and this will be no different,” publicity coach Mayah Riaz recently told The Mirror. “I believe the film could hit record number in the first week at the box office.”Riaz added that the numbers could even compare to Greta Gerwig’s recently released “Barbie” movie, which hit $1 billion in global ticket sales over the weekend.