Improve app metadata, include fdroid metadata in repository

android/gradle.properties

 org.gradle.jvmargs=-Xmx1536M
 android.useAndroidX=true
 android.enableJetifier=true
-app.versionName=0.1.5
-app.versionCode=54
+app.versionName=0.1.6
+app.versionCode=55

fastlane/metadata/android/en-US/changelogs/55.txt

+Improve app metadata, include fdroid metadata in repository

fastlane/metadata/android/fr-FR/changelogs/55.txt

+Ajout des métadata fdroid dans le dépôt

fdroid_metadata.yml

+AuthorName:   'Benoît Harrault'
+Categories:
+  - Games
+Name:         Simple Sudoku Game
+AutoName:     sudoku
+License:      GPL-3.0-only
+WebSite:      'https://git.harrault.fr/android/org.benoitharrault.sudoku'
+SourceCode:   'https://git.harrault.fr/android/org.benoitharrault.sudoku'
+IssueTracker: 'https://git.harrault.fr/android/org.benoitharrault.sudoku/issues'
+Changelog:    'https://git.harrault.fr/android/org.benoitharrault.sudoku/-/tags'
+Summary:      Simple Sudoku Game, easy to play, easy to enjoy
+Description:  |
+  Simple Sudoku Game:
+
+  This simple sudoku game is aimed for kids (but not only).
+
+  You can play and have fun even if you can't read!
+
+  With a deliberately limited number of game options, everyone can understand how to play and how to adapt this game to his needs.
+
+  You can choose:
+  #   difficulty: easy, medium, hard, nightmare
+  #   size: 2x2 (very easy, for kids), 3x2 (easy), 3x3 (standard), 4x4 (why?)
+  #   tiles theme: digits (standard), pictures (for kids, several themes available)
+
+  Some help can be provided with two buttons:
+  #   "tip": will select next fillable cell on first tap, will fill this cell whith right value on second tap
+  #   "conflicts": will show conflicting cells
+
+  Every grid has one unique solution. No assumption or guessing is needed to solve grids.
+
+RepoType:     git
+Repo:         'https://git.harrault.fr/android/org.benoitharrault.sudoku.git'
+FdroidAppUrl: 'https://f-droid.org/fr/packages/org.benoitharrault.sudoku/'