Add Custom lock screen clock font and size

### Feature Description

It would be great to have the ability to just customize the lock screen clock font and size. Hope it will be added.
For now, we have to change the system font to apply it to the lock screen too. It would be great if its added. More room for customization is always welcomed. Devs, You can add your idea in t to make the concept even better.

### Use Case

_No response_

### Compositor(s)

All compositors

### If Other, please specify

_No response_

### Proposed Solution

_No response_

### Alternatives/Existing Solutions

_No response_