Introduce a new user guide describing how to run continuous audits using
the dummy strategy. The guide covers:
- Overview and state machine
- Creating audits with interval and cron expressions
- Time window constraints (start/end time)
- Monitoring executions and action plan lifecycle
- Managing audits (stop/modify)
- Configuration reference and links to related specs
Closes-Bug: #2120437
Assisted-By: GPT-5 (Cursor)
Assisted-By: claude-sonnet-4 (Claude Code)
Change-Id: I842139271752cedb138e422027020488f22fe248
Signed-off-by: Chandan Kumar (raukadah) <chkumar@redhat.com>