Separate the hours from Pager

Idea Description see #151

The hours is built in the Pager because of ScreenScrollState issues. If possible, it is preferable that the Hours be separated from the Pager.

Hours is in the Pager, so when we switch pages (tabs), the hours moves with it. We want to detach the Hours from the Pager.

To do this, I think we need to consider how to handle ScreenScrollState.

Reference images and links #109 #151

[Pon57]

@takahirom I am not confident that I can solve it, but I would like to give it a try. Please assign me!

[takahirom]

@Pon57 It’s ok. All we can do is to do the best what we can do.