tmux: add resurrect to save/restore pane/window layout

.config/tmux/plugins/resurrect/docs/hooks.md

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+# Save & Restore Hooks
+
+Hooks allow to set custom commands that will be executed during session save
+and restore. Most hooks are called with zero arguments, unless explicitly
+stated otherwise.
+
+Currently the following hooks are supported:
+
+- `@resurrect-hook-post-save-layout`
+
+  Called after all sessions, panes and windows have been saved.
+
+  Passed single argument of the state file.
+
+- `@resurrect-hook-post-save-all`
+
+  Called at end of save process right before the spinner is turned off.
+
+- `@resurrect-hook-pre-restore-all`
+
+  Called before any tmux state is altered.
+
+- `@resurrect-hook-pre-restore-pane-processes`
+
+  Called before running processes are restored.
+
+### Examples
+
+Here is an example how to save and restore window geometry for most terminals in X11.
+Add this to `.tmux.conf`:
+
+    set -g @resurrect-hook-post-save-all 'eval $(xdotool getwindowgeometry --shell $WINDOWID); echo 0,$X,$Y,$WIDTH,$HEIGHT > $HOME/.tmux/resurrect/geometry'
+    set -g @resurrect-hook-pre-restore-all 'wmctrl -i -r $WINDOWID -e $(cat $HOME/.tmux/resurrect/geometry)'