v7.6.1 changes

• Screen Recorder: added a Pause/Resume button while recording.
• Screen Recorder: added Webcam overlay (live preview, position, size, flip).
• Screen Recorder: added mouse effects — cursor highlight, click effects, and click sounds.
• Screen Recorder: added a countdown before recording starts.
• Screen Recorder: newly designed options dialog (General, Video & Audio, Cursor, Webcam).
• Improved HEIF/HEIC image support.
• Fixed window-control capture failing on apps that span the whole desktop.
• Renaming a file now handles invalid and duplicate names.
• Printer settings are no longer loaded at startup.
• Other minor bug fixes.