Add lifeos-cli

[liujuanjuan1984]

This adds lifeos-cli to Platforms, Applications and Tools.

Why it fits:

• it is a knowledge-oriented personal system rather than a single-purpose tracker
• it connects notes, tasks, habits, events, schedules, and timelogs in one terminal-native workflow
• it is especially relevant for people who want structured, local, command-line-first knowledge and life management