feat: add tmux-sessioner script

Add a script for quickly navigating between directories using fzf and
tmux sessions. Executable within zsh and Vim.

bin/bin/tmux-sessioniser

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+# Quickly navigate between different directories using fzf and tmux sessions
+# (Thanks, ThePrimeagen!).
+#
+# https://github.com/ThePrimeagen/.dotfiles/blob/master/bin/.local/bin/tmux-sessionizer
+# https://frontendmasters.com/workshops/dev-productivity
+
+if [[ $# -eq 1 ]]; then
+  selected=$1
+else
+  # Get the session name from fuzzy-finding list of directories and generating a
+  # tmux-safe version.
+  selected=$(find ~/ ~/Code ~/Code/clients ~/Code/os ~/Code/Personal ~/Documents/Talks/ -mindepth 1 -maxdepth 1 -type d | fzf)
+fi
+
+selected_name=$(basename "$selected" | tr . -)
+
+if [[ -z $selected ]]; then
+  exit 0
+fi
+
+# Create a new session if tmux does not already have a session matching the
+# selected session name.
+if ! tmux has-session -t $selected_name 2> /dev/null; then
+  tmux new-session -s $selected_name -c $selected -d
+fi
+
+tmux switch-client -t $selected_name