[FL-3947] Pinning of settings options (#4077)

* feat: pinning settings in favorites

* include archive in unit tests fw

* change settings icon

* update text with suggestions from the ui team

* Small touch of constness

---------

Co-authored-by: あく <alleteam@gmail.com>
Co-authored-by: hedger <hedger@users.noreply.github.com>
Co-authored-by: hedger <hedger@nanode.su>

applications/main/archive/helpers/archive_favorites.h

@@ -12,3 +12,13 @@ bool archive_is_favorite(const char* format, ...) _ATTRIBUTE((__format__(__print
 bool archive_favorites_rename(const char* src, const char* dst);
 void archive_add_to_favorites(const char* file_path);
 void archive_favorites_save(void* context);
+
+/**
+ * Intended to be called by settings apps to handle long presses, as well as
+ * internally from within the archive
+ * 
+ * @param app_name name of the referring application
+ * @param setting  name of the setting, which will be both displayed to the user
+ *                 and passed to the application as an argument upon recall
+ */
+void archive_favorites_handle_setting_pin_unpin(const char* app_name, const char* setting);