It’s the most significant literary work about a Russian woman called Anna since… actually, ever! Several people, including Shonda Rhimes, have told “the Anna Delvey story.” Now Page Six has learned that Delvey is finally telling it herself. Publishing insiders tell us that the so-called “Fake Heiress” — who was jailed for grand larceny in 2019 after posing as a German trust-funder to pay for her luxury lifestyle and has reinvented herself as a media macher since her release — is shopping her memoir. Anna Delvey, here in her Manhattan apartment, is shopping a memoir, Page Six has learned. Tamara Beckwith Delvey, shown at the Private Policy fashion show in New York, has reinvented herself as media personality. Getty Images We’re told its doing the rounds of major publishers as we speak, repped by Peter McGuigan of Ultra Literary. (McGuigan reportedly sold Nickelodeon star Jeanette McCurdy’s bestselling 2022 memoir “I’m Glad My Mom Died” for seven figures).…