US First Lady Melania Trump made a rare foray onto center stage Wednesday with the first trailer for her Amazon documentary -- fixing the camera with an unflinching gaze and summing up her husband’s comeback in four words: “Here we go again.”For all the latest headlines follow our Google News channel online or via the app.The teaser for “Melania” -- out January 30 -- follows the famously private Slovenian-American former model as she walks into the US Capitol for President Donald Trump’s second swearing-in.Reports put Amazon’s licensing deal for the film at around $40 million. The Wall Street Journal reported that Melania, who served as executive producer, will receive 70 percent of that sum -- a figure that has raised eyebrows among her critics.Amazon MGM promises “unprecedented access” in the documentary which chronicles the 20 days leading up to Inauguration Day in January, from transition planning to closed-door meetings and off-stage moments.The brisk trailer oscillates between