Add "Flutter App Development Project" new domain of projects by making mini game app.

[Mayur-nimkande-20]

Hey @hackelite01 , i wanted to contribute to your repo under Hacktoberfest 2024 by adding a flutter application which includes mini games like sudoku and chess. This will open more doors for flutter contributors also. Do consider to assign me this task.

[hackelite01]

For creating a PR for hacktoberfest, kindly visit https://github.com/hackelite01/hacktoberfest2024.