issue 12: fixed tooltip flicker; prevent tooltip run off screen

[glasheen99]

The heart of this change was implementing custom OverlayLayout to size and position tooltips without waiting an extra frame (if I understood the root cause correctly). I haven't witnessed any flicker in the test app, nor in my app, since this change.

I added more tooltips to the demo app. I can remove them if needed.

OverlayLayout: I added a parameter gapTooltipScreen to control how close tooltips can approach left and right side of screen, but I didn't expose this in calling composables. I can do so if you want.

It's still possible to specify tooltips so that they run off the top or bottom of the screen. This is a harder than preventing left and right "overrun"; I mentioned it briefly in the layout code.

[pseudoankit]

Hey thanks for raising the pr, will check this

[pseudoankit]

BTW isn't this layoutId for Tooltip, can we rename TooltipId
also do we need this as enum looks this can be a object and values as const
don't see any usage of having enums here

[pseudoankit]

I added a parameter gapTooltipScreen to control how close tooltips can approach left and right side of screen, but I didn't expose this in calling composables

please expose it let's give client flexibility

[glasheen99]

Somehow I can't reply here on the comment you made re: the enum. I replied on it in the code listing.

[pseudoankit]

Thanks for the pr 🙏 , merged