Nettlesome UI overlaps

[anthonyronda]

Describe the bug
Pictures speak a thousand words. Various UI elements are overlapping here. See the screenshots below.

To Reproduce
Steps to reproduce the behavior:

1. Have way too many modules that add buttons installed and enabled
2. Have another module such as Small Time installed and enabled
3. Enable Foundry A/V
4. Dismiss the player list

Expected behavior
Button UI should wrap back to the top
Modules should learn how to share this screen space
A/V webcam element should be kept to the right when there's a module in this corner and the player list is dismissed

Screenshots

Other Diagnostic Info (please complete the following information):
N/A

Additional context
There's some discussion in the League of Extraordinary Foundry VTT Devs about a potential library module, or allowing button-overflow to serve that purpose of "governing" this space.