Add prompt option for ed

Ed has the ability to have a prompt, which is nice to see when you are
in command mode. This commit lets you set one via chimera options

Change-Id: I537d686bb866bc6e996446c0251fad8bb09d3c5b
Reviewed-on: https://git.clicks.codes/c/Chimera/NixFiles/+/393
Reviewed-by: Samuel Shuert <coded@clicks.codes>
Tested-by: Skyler Grey <minion@clicks.codes>
2 files changed