feat(tmuxinator): add configurations for casino and djh projects

.config/tmuxinator/.gitignore

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+/*
+
+!casino.yml
+!.gitignore

.config/tmuxinator/casino.yml

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+# /home/csimonis/.config/tmuxinator/casino.yml
+
+name: casino
+root: ~/projects/school/casino
+
+# Optional tmux socket
+# socket_name: foo
+
+# Note that the pre and post options have been deprecated and will be replaced by
+# project hooks.
+
+# Project hooks
+
+# Runs on project start, always
+on_project_start: docker compose up -d
+
+# Run on project start, the first time
+# on_project_first_start: command
+
+# Run on project start, after the first time
+# on_project_restart: command
+
+# Run on project exit ( detaching from tmux session )
+# on_project_exit: command
+
+# Run on project stop
+on_project_stop: docker compose down
+
+# Runs in each window and pane before window/pane specific commands. Useful for setting up interpreter versions.
+# pre_window: rbenv shell 2.0.0-p247
+
+# Pass command line options to tmux. Useful for specifying a different tmux.conf.
+# tmux_options: -f ~/.tmux.mac.conf
+
+# Change the command to call tmux.  This can be used by derivatives/wrappers like byobu.
+# tmux_command: byobu
+
+# Specifies (by name or index) which window will be selected on project startup. If not set, the first window is used.
+# startup_window: editor
+
+# Specifies (by index) which pane of the specified window will be selected on project startup. If not set, the first pane is used.
+# startup_pane: 1
+
+# Controls whether the tmux session should be attached to automatically. Defaults to true.
+# attach: false
+
+windows:
+  - casino:
+      layout: main-vertical
+      # Synchronize all panes of this window, can be enabled before or after the pane commands run.
+      # 'before' represents legacy functionality and will be deprecated in a future release, in favour of 'after'
+      # synchronize: after
+      panes:
+        - clear
+        - cd frontend && nvm use 22.12 && exec bun run start
+        - cd backend && exec watchexec -r -e java ./gradlew :bootRun