feat: add setting for showing pronouns in user info popup (#5442)

This uses https://pr.alejo.io/

Co-authored-by: pajlada <rasmus.karlsson@pajlada.com>

mocks/include/mocks/EmptyApplication.hpp

@@ -264,6 +264,13 @@ public:
         return nullptr;
     }
 
+    pronouns::Pronouns *getPronouns() override
+    {
+        assert(false && "EmptyApplication::getPronouns was called without "
+                        "being initialized");
+        return nullptr;
+    }
+
     QTemporaryDir settingsDir;
     Paths paths_;
     Args args_;