Chris Willman Music WriterWhen contemporary Nashville artists and songwriters talk about perfect modern country songs, many of them wind up circling around one in particular: the Miranda Lambert-sung “The House That Built Me.” The co-writer of that and other classics over the last few decades, Tom Douglas, is the narrator and subject of a film, “Love, Tom,” just announced as coming out exclusively via the Paramount Plus streaming service on Feb. 24.A trailer for the project has the world-class songwriter appearing in a variety of Nashville locales, including the Ryman Auditorium, the Shelby Street Bridge downtown, a truck and a front porch, as he offers narration derived from a well-remembered, inspirational acceptance speech he gave upon being inducted into the Nashville Songwriters Hall of Fame in 2014.