feat(library): hide and unhide games

public/i18n/en.json

@@ -185,6 +185,8 @@
     "SORT_RATING": "Best rated",
     "SORT_PRIORITY": "Highest priority",
     "FILTER_SHORT": "Short (up to 10 h)",
+    "FILTER_HIDDEN": "Hidden",
+    "NO_HIDDEN": "No hidden games. Hide a game on its detail page, e.g. a playtest or a tool.",
     "ACHIEVEMENTS": "{{unlocked}} of {{total}} achievements"
   },
   "GAME_DETAIL": {
@@ -195,6 +197,12 @@
     "NOT_FOUND": "Game not in your library.",
     "PLAYTIME": "Playtime: {{time}}",
     "OPEN_IN_STEAM": "View on Steam",
+    "HIDE": "Hide game",
+    "UNHIDE": "Show game again",
+    "HIDDEN_NOTE": "Hidden: this game is not in your library lists, stats or public profile. Only its playtime is still updated.",
+    "HIDDEN_TOAST": "Game hidden",
+    "SHOWN_TOAST": "Game shown again",
+    "HIDE_ERROR": "Could not change the game.",
     "OPEN_IN_SPEEDRUN": "Speedruns on speedrun.com",
     "ACHIEVEMENTS": "Achievements",
     "UNLOCKED": "Unlocked",