chore: rename tmux-sessioniser

- Rename `tmux-sessioniser` to `t`.
- Search only within the `~/Code` directory instead of using zoxide.

bin/t

@@ -0,0 +1,39 @@
+#!/usr/bin/env 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 -type d -mindepth 1 -maxdepth 2 ! -name .git | sort | fzf --reverse)
+fi
+
+if [[ -z $selected ]]; then
+  exit 0
+fi
+
+is_tmux_running=$(pgrep tmux)
+selected_name=$(basename "$selected" | tr . -)
+
+if [[ -z $TMUX ]] && [[ -z $is_tmux_running ]]; then
+    tmux new-session -s $selected_name -c $selected
+    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
+
+if [[ -z $TMUX ]]; then
+  tmux attach-session -t $selected_name
+else
+  tmux switch-client -t $selected_name
+fi