Realtime Sensors Implementation

[isbm]

This PR adds ability to detect system changes in real time, adding sensors mechanism.

Goals:

• True cross-platform portability between Linux and *BSD (Windows > /dev/null lol)
• Low CPU/mem/IO
• Zero my-great-os components

Done:

• Designed & defined
• Implemented spec parser
• Implemented spec chunked loader
• Implemented service runner for probes
• Added file listener sensor probe
• Added events routing
• Documentation updated
• Unit tests added

[Copilot]

Pull request overview

This PR implements a comprehensive real-time sensors mechanism for the SysInspect system, enabling cross-platform monitoring of system changes with low resource overhead. The implementation adds sensor configuration parsing, a service runner for sensor probes, file listener capabilities, and event routing to handlers.

Changes:

• Added new libsensors crate with sensor specification parser, service runner, and fsnotify sensor implementation
• Updated event routing format from forward-slash delimiters (/) to pipe delimiters (|) for better parsing
• Enhanced EventProcessor with drain functionality and improved lifecycle management
• Extended protocol with SensorsSyncRequest and SensorsSyncResponse message types
• Added sensors directory configuration and file synchronization support in minion/master

Reviewed changes

Copilot reviewed 49 out of 50 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
libsensors/*	New crate implementing sensor specification parsing, service management, and fsnotify sensor
sysminion/src/minion.rs	Added sensor synchronization, file download, and event processor integration
sysminion/src/filedata.rs	Added SensorsFiledata for managing sensor file checksums and paths
sysminion/src/main.rs	Configured multi-threaded tokio runtime with explicit worker/blocking thread limits
sysmaster/src/master.rs	Added sensors file serving and sync response message handling
sysmaster/src/dataserv/fls.rs	Enhanced file server initialization to create sensors directory structure
libsysproto/*	Added new request types and sensors_root field to payload structures
libsysinspect/src/intp/actproc/response.rs	Implemented from_sensor() and enhanced matching with @ specifier support
libsysinspect/src/reactor/*	Renamed Config to EventsConfig, added drain_all method, improved JSONPath interpolation
libsysinspect/src/cfg/mmconf.rs	Added sensors directory configuration methods for minion/master
libdpq/src/lib.rs	Added EventCommand variant to WorkItem enum
docs/*	Updated documentation for event routing format change and added sensor documentation

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[Copilot]

The event pump loop on line 293-301 runs forever without any shutdown mechanism. This spawned task will continue running even if the sensors need to be stopped or restarted. Consider adding a cancellation mechanism (e.g., using tokio::select! with a shutdown signal) or storing the JoinHandle for proper lifecycle management.