Portamento Glissando Playback, Target note re-attacked, request to reinstate "Ease In"/"Ease Out" feature from MS3

Issue type

General playback bug

Bug description

1. Feature Missing from MS3: Moreover there was a really handy feature from MS3, where you could ease in or ease out a glissando, which is now gone.
   Please bring back something like it.

2. Feature Request: Most importantly: Most of the time glissandi do not last for the entirety of the time a note is played, but in my experience are more just on the 2nd half of that note. You could easily add this "gliss-delay" option, maybe together with that easing curve option (preferably by note value or percentage rather than by seconds).

3. Playback 2: When the target note is reached, it is usually played like a new note (with attack), whereas the default should be to just slide into the target note legato-like.

Steps to reproduce

just add a glissando and choose Portamento for type (which is the essence of a glissando) and play it back
see attached screenshot below -> in MS3 this feature works properly

Screenshots/Screen recordings

This has been the old Glissando Playback Section in MS3:
!

Add the x-axis ticks and the delay-option and it will be phenomenal.

MuseScore Version

4.0.2

Regression

Yes, this used to work in Musescore 3.x and now is broken

Operating system

Windows 11

Additional context

No response