feat(play-next): add FRIENDS row and reason text

Shows games from followed users. Reason displays friend name and finish
or playtime status. Supports reroll without mood. Added English and
German translations.

public/i18n/en.json

@@ -431,11 +431,13 @@
   },
   "PLAY_NEXT": {
     "TITLE": "What to play next",
-    "SUBTITLE": "Games from your backlog in six rows: next in your order, the next part of a series you played, like games you played a lot, from a studio you played, waiting longest, and by mood. Pick a length for all rows and a mood for the last one.",
+    "SUBTITLE": "Games from your backlog in seven rows: next in your order, the next part of a series you played, like games you played a lot, from a studio you played, what people you follow played, waiting longest, and by mood. Pick a length for all rows and a mood for the last one.",
     "REASON": {
       "SIMILAR": "Because you played {{name}} ({{playtime}})",
       "SERIES": "Series: {{name}}",
       "STUDIO": "From {{name}}",
+      "FRIENDS_FINISHED": "{{name}} finished it",
+      "FRIENDS_PLAYED": "{{name}} played {{playtime}}",
       "LONGEST": "On your list since {{date}}"
     },
     "CATEGORY": {
@@ -443,6 +445,7 @@
       "SERIES": "Next in series",
       "SIMILAR": "Because you played",
       "STUDIO": "Same studio",
+      "FRIENDS": "From people you follow",
       "LONGEST": "Longest on your list",
       "RANDOM": "Random picks",
       "MOOD": "Mood: {{mood}}"