Implement SavedStateHandle in a working manner

[Syer10]

Closes #99
SavedStateHandle support didn't work since the outstate was always null or never got saved outside the screen lifecycle owner. I found a way to test SavedStateHandle to get it working how its meant to be used.

1. Put the app in the background for a few seconds, at least until the activity hits the stop state
2. Use the (old) android studio logcat's menu to use its unique terminate app button
3. When starting up the app should try to return to its old state with SavedStateHandles and everything

Whats left to do for Android lifecycle integration(will happen in other PRs):

• Attach the lifecycle to the parent lifecycle, so if the activity hits onStop, the ScreenLifecycle will as well

[MasterBin]

@adrielcafe Any plans to merge this?

[zakrodionov]

@adrielcafe Hello! It would be nice to fix it :)

[Syer10]

No need to spam him, if you need it so bad you can use my fork https://github.com/Syer10/voyager