feat: epub bookmarks (#1337)

Co-authored-by: vedi0boy <nate@origin8publishing.com>
Co-authored-by: Uri Tauber <uritaube@gmail.com>

src/activities/ActivityResult.h

@@ -36,7 +36,7 @@ struct PageResult {
   uint32_t page = 0;
 };
 
-struct SyncResult {
+struct ProgressChangeResult {
   int spineIndex = 0;
   int page = 0;
 };
@@ -56,7 +56,7 @@ struct FilePathResult {
 };
 
 using ResultVariant = std::variant<std::monostate, WifiResult, KeyboardResult, MenuResult, ChapterResult, PercentResult,
-                                   PageResult, SyncResult, NetworkModeResult, FootnoteResult, FilePathResult>;
+                                   PageResult, ProgressChangeResult, NetworkModeResult, FootnoteResult, FilePathResult>;
 
 struct ActivityResult {
   bool isCancelled = false;