Bash completion script doesn't tab complete file names in flag arguments

[ethagnawl]

Describe the bug
The current tmuxinator bash completion script does not tab complete flag arguments (e.g. tmuxinator start -p foo.yml).

To Reproduce
1.) Install tmuxinator bash completion script
2.) Source completion script
2.) In a Bash shell, try to tab complete a project config flag argument at a known location: tmuxinator start -p ./f

Expected behavior
In the example above, hitting tab after typing "./f" should result in foo.yml being autocompleted.

Environment

• tmuxinator Version: 3.0.1
• tmux Version: 3.1c
• Ruby Version: ruby 3.0.2p107
• OS: Debian 11