Regolith2: Bind key to open vscodium remote project

Adds a new i3 shortcut to open an Ilia textlist displaying the folders from the remote server, which in turn then opens a vscodium flatpak with the remote-ssh extension.

File: ~/.config/regolith2/i3/config.d/config

## Open remote in vscodiumnbindsym $mod+Shift+w exec "/var/lib/flatpak/exports/bin/com.vscodium.codium --remote ssh-remote+[user]@[remote-server] /home/[user]/Projects/$(ssh [user]@[server] '> /dev/null 2>&1"n