Portable format for saving multi-pane sessions in terminal emulators

[abitrolly]

Much needed an ability to open terminal session for specific issue in bug tracker. The session with mutiple panes already setup with code, tests, log output - everything immediately demonstrating the issue at hand, and actionable (prepared to be fixed) by typing text into active cursor location.

From #22.

[abitrolly]

Tilix session format: gnunn1/tilix#709 (comment)

[abitrolly]

Terminator layouts are GUI only: https://terminator-gtk3.readthedocs.io/en/latest/layouts.html

[abitrolly]

Terminology start options allow to split at start and run commands. Still doesn't work right in 1.6.0 - bash only in a first page and a trace is show in parent stdout.

terminology -S v- -e "/bin/bash" "/bin/bash"

[abitrolly]

tmux can start and run two commands in separate panes.

tmux new-session "bash"\; split-window -h "bash"\;

The only problem is with bash, which doesn't have an option to run command and stay in interactive session.