Document terminal support in each type #990
Description
Is your feature request related to a problem? Please describe.
When issues / discussions / questions always come up about how to enable some function, often there's missing information about which terminals support the functionality.
Describe the solution you'd like
Add a wiki doc that talks about terminal support generally.
For each command / module / enum variant (where necessary) which defines optionally implemented functionality, add a table with a permalink anchor (probably just a heading?) to the wiki which tracks the tested versions of terminal emulators with that functionality. Link these in the code docs.
Describe alternatives you've considered if any
Additional context
Using a wiki for this makes it easier to update this info. This makes it possible to track features where support might be added at a later time without having to release crossterm to update the info.