Add Tmux

Being able to use a unified terminal setup between local and remote
hosts has some real advantages.

config/tmux/tmux.conf

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+# Reload config
+unbind r
+bind r source-file ~/.config/tmux/tmux.conf
+
+# Themeing
+source-file ~/.config/omarchy/current/theme/tmux.conf
+
+# General
+set -g default-terminal "tmux-256color"
+set -ag terminal-overrides ",*:RGB"
+set -g mouse on
+set -g base-index 1
+setw -g pane-base-index 1
+set -g renumber-windows on
+set -g history-limit 50000
+set -g escape-time 0
+set -g focus-events on
+set -g set-clipboard on
+setw -g aggressive-resize on
+set -g detach-on-destroy off
+
+# Status bar
+set -g status-position top
+set -g status-interval 5
+set -g status-left-length 30
+set -g status-right-length 50
+set -g window-status-separator ""
+
+# Vi mode for copy
+setw -g mode-keys vi
+bind -T copy-mode-vi v send -X begin-selection
+bind -T copy-mode-vi y send -X copy-selection-and-cancel
+
+# Saner splits that open in the same directory
+bind | split-window -h -c "#{pane_current_path}"
+bind - split-window -v -c "#{pane_current_path}"
+
+# Pane navigation
+unbind Left
+unbind Down
+unbind Up
+unbind Right
+bind Left select-pane -L
+bind Down select-pane -D
+bind Up select-pane -U
+bind Right select-pane -R
+
+# Pane resizing
+bind -r S-Left resize-pane -L 5
+bind -r S-Down resize-pane -D 5
+bind -r S-Up resize-pane -U 5
+bind -r S-Right resize-pane -R 5
+
+# Window navigation
+unbind PPage
+bind PPage previous-window
+bind NPage next-window
+
+# New windows in same directory
+bind c new-window -c "#{pane_current_path}"
+
+# Sessions
+bind C new-session
+bind X kill-session