[Feature]: Document (and maybe standardize) hotkeys across map views

[calebrob6]

Problem Statement

a/s/d are used in the Results viewer to change the swipe map position
1/2/3 are used in the Building validation viewer to select labels
Need a hotkey or toggling between pre and post imagery (or basemap and post imagery)

Proposed Solution

Do work

Alternatives Considered

No response

Area

API (Azure Functions)

Additional Context

No response

Checklist

• I have searched existing issues and this has not already been requested.