[Feature]: Pipe stdin to preview block

[rantos9]

Feature description

wsh view - should work similiar to wsh ai - and accept input from stdin.

Implementation Suggestion

No response

Anything else?

No response

[nahoj]

The viewer could also support non-regular files, so that one could do wsh view <(command).

At the moment, wsh view <(echo hi) shows an empty file.

I wouldn't consider this high-priority if wsh view - is implemented first, though.