New Feature: Smooth Zoom

[marcelbpunkt]

Implement a smooth zoom functionality such that, when the Toggle Zoom key is pressed, the zoom increases gradually within a specified duration.

[marcelbpunkt]

It's stable now (just entered the wrong gradle command 🙄 ).
There's still some fine tuning left to do:

• reset smooth camera as soon as zoom key is released (as opposed to when fully zoomed back out)
• ajust function handling for releasing before zoom-in is complete and vice versa such that it does not have those huge jumps anymore (especially in long durations)