Add board templates

android/gradle.properties

assets/icons/layout_diamond.png

assets/icons/layout_english.png

assets/icons/layout_french.png

assets/icons/layout_german.png

fastlane/metadata/android/en-US/changelogs/10.txt

fastlane/metadata/android/fr-FR/changelogs/10.txt

icons/build_game_icons.sh

icons/layout_diamond.svg

icons/layout_english.svg

icons/layout_french.svg

icons/layout_german.svg

lib/provider/data.dart

lib/screens/home.dart

lib/utils/board_utils.dart

lib/utils/game_utils.dart