feat: add tmux and tmuxp (#1)

Allow terminal multiplexing through [`tmux`][0] and make it configurable using [`tmuxp`][1].

[0]: https://github.com/tmux/tmux
[1]: https://github.com/tmux-python/tmuxp

Co-authored-by: Joao P Dubas <joao.dubas@gmail.com>
Reviewed-on: #1
Co-authored-by: Joao P Dubas <joao.dubas+gitea@gmail.com>
Co-committed-by: Joao P Dubas <joao.dubas+gitea@gmail.com>

config/tmuxp/work.yml

@@ -0,0 +1,15 @@
+session_name: personal
+start_directory: /opt/personal
+windows:
+  - window_name: labs
+    focus: true
+    layout: even-vertical
+    start_directory: labs/
+    panes:
+      - focus: true
+      - pane 
+  - window_name: ide
+    layout: even-vertical
+    panes:
+    - focus: true
+    - pane