[Enhancement] Implement GuiKeyValueDisplay container that supports scrolling or pagination

[oznogon]

Issue

Long K/V lists that overrun their container, such as on science DB (#1924), science info (if #2648 is implemented), and custom functions, can't be navigated, leading to some items not being rendered.

Suggested fix

Implement scrolling and/or paginated containers, either specifically for K/Vs or generically for layout elements.