Move Game List to own file

[brylie]

The Game List is currently defined as an instance variable if the Home Page

children-games/children_games/lib/main.dart

Line 21 in 5e1741b

final List<Game> games = [

This makes it a bit difficult to manage the list of games, which may get quite large. It would be better to move the games list into its own file. The file could simply contain a Dart list of Game objects or be a more generic format like JSON.

Compare approaches to maintaining the game list in a dedicated file, choose the best approach given desirable trade offs, and implement the solution.