[FEATURE] Brightness Control

[Akash6222]

Describe the improvement

• [ ] Keybind for controlling the brightness
• [ ] Add Icon on panel

Why do we need this?

Following points will specify the reason for including this Feature:-

• Easily able to control the brightness
• Easily able to access through panel

Terms and Conditions

• [x] I agree to follow this project's Code of Conduct

[demonkillerr]

Requires xfce4-power-manager