[FEATURE] Add Zoom Level Indicator, Flash Feature, and QR Code Scanner

[yavuzselimkolbasar]

Checklist

• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the request will be dismissed otherwise.
• This issue contains only one feature request.
• I have read and understood the contribution guidelines.

Feature description

I propose three improvements for Fossify Camera:
1. Zoom Level Indicator: Display the zoom level (e.g., 1x, 2x, 3x) when zooming in or out, to prevent issues with framing.
2. Flash Feature: Add a flash toggle in the top bar for quick access to turning the flash on or off.
3. QR Code Scanner: Integrate a QR code scanning feature directly into the camera app for convenience.

Why do you want this feature?

Zoom Level Indicator: Without knowing the exact zoom level (like 1x), it’s hard to control framing, and sometimes it switches to a wide lens, resulting in poorly composed shots.
• Flash Feature: Having a flash toggle on the top bar allows for faster access when needing extra light for photos, especially in low-light environments.
• QR Code Scanner: A built-in QR code scanner would save time and make the app more versatile, removing the need for an external app.

Additional information

The zoom level indicator should be a small, non-intrusive overlay that briefly appears when zooming.
• The flash toggle should be placed in the top bar for easy access without diving into settings.
• A QR code scanner could be accessed directly through the camera mode, making it easy to scan codes without switching apps.

These features would significantly enhance the usability and versatility of Fossify Camera.

[Aga-C]

There are multiple requests. Please split it into separate issues.