script-name: keep-session.lua

[Yunuuuu]

##################################### Is this a request for a brand new script? If so please make a Discussion thread instead #####################################

Is your feature request related to a problem? Please describe. No

Describe the solution you'd like

1. Keep multiple sessions (playlist)
2. add two commmand: session-prev: Jumps to the previous playlist of history, if there is one.
   session-next: Jumps to the next playlist of history, if there is one.

[Yunuuuu]

fixed: https://github.com/Yunuuuu/mpv-config/blob/main/scripts/sessions.lua