adding hover over enhancement

[kiok46]

Earlier in Kivy-Designer we had to click on each DesignerActionGroup button to open it, we couldn't open it just by hovering over it via mouse.
This pr solves this.

[aron-bordin]

Hi @kiok46 ,
Your pr looks good.

Please, just add some comments/docs about these new class attributes(like any property, what it does and its type) and new methods. And if possible, some source code comments may help new contributors ;)

Thx

[kiok46]

Hi! @aron-bordin, see if it's ok now :)

[aron-bordin]

Testing it, I realized that it's necessary to check if there is an open popup, or just identify if all action groups are closed to disable to_open

For example, go to Run -> Edit Profiles .... You will see a popup. Now, move the mouse on action bar. The action groups are opening. In such cases to_open should be set to False to avoid these issues.

[kiok46]

Hey! @aron-bordin
I have made the changes, tell me if you want me to squash them.

[aron-bordin]

Awesome @kiok46 , thx again 👍

[kiok46]

@aron-bordin I enjoyed 😄 , welcome