Set P9K_SSH correctly when running in WSL

[JosefUtbult]

Solve #2709 by checking if system is running in WSL and in that case if it is running under an SSH session

[z0rc]

Powerlevel10k must be fast in all cases, in order to archive usage of external binaries is heavily constrained.

This means there should be no calls to grep, sed, no forks and subshells $() in general. Check surrounding code how parsing is implemented using Zsh parameter expansion.

[flash-me]

$(grep -i Microsoft /proc/version) && \ $(cmd.exe /c 'echo %SSH_CLIENT%'

[JosefUtbult]

Powerlevel10k must be fast in all cases, in order to archive usage of external binaries is heavily constrained.

This means there should be no calls to grep, sed, no forks and subshells $() in general. Check surrounding code how parsing is implemented using Zsh parameter expansion.

Sure. I'll look into it