Minor features and improvements for xray, build, profile and debug as well as minor new sensor features

New Features

• Sensor control commands to control sensor execution when running in the standalone mode (first command: stop-target-app).
• xray - detect system identities (users, groups) and their properties (--detect-identities flag, enabled by default).
• build - Keep the OS/libc zoneinfo data (--include-zoneinfo flag, disabled by default).
• build/profile - Mon(itor) Data Event Log (aka mondel) - optional data event log for sensor monitors to log/stream monitor events (--enable-mondel main app flag, --mondel/-n sensor flag(s)).

Improvements

• target-app-running sensor lifecycle hook.
• build/profile: --env-file to load env vars from a file.
• build/profile: basic input validation to ignore malformed env var data for the --env flag.
• build: Using internal output image builder by default (--image-build-engine flag)
• Renamed the reverse engineered Dockerfile from Dockerfile.fat to Dockerfile.reversed (the reversed Dockerfile is also saved with the old name for backward compatibility

Bug Fixes

• Various bug fixes (see commits/PRs for details)

Binaries

Build them from source or download from a CDN location:

• Linux
• Linux ARM
• Linux ARM64
• Mac
• Mac M1
• Containerized: docker pull dslim/slim