[NEW PORT] sysutils/devtui: Swiss-army app for developers

All-in-one terminal toolkit that consolidates everyday developer utilities into
a unified TUI and CLI interface.

QA:

• portclippy: ok
• portfmt -D: ok
• portlint -AC: ok
• poudriere 15.0-amd64: ok
• poudriere 14.3-amd64: ok
• poudriere 13.5-amd64: ok

PR: 266820
Tested by: michaelo