RTOS Feature Demonstration (Queues, Mutexes & Event Flags)

[AmmarOkla12772]

Expand the Device Monitor Demo to showcase common ThreadX synchronization and communication primitives.

Goals:

• Add a TX_QUEUE demonstration with sender and receiver worker threads.
• Add a TX_MUTEX demonstration with competing worker threads.
• Add a TX_EVENT_FLAGS_GROUP demonstration using periodic signaling.
• Extend monitoring output with primitive-specific statistics.

DoD:

• Queue traffic is visible in runtime diagnostics.
• Mutex acquisition counters increase during execution.
• Event flags are periodically set and consumed.
• Thread states visibly transition between running, ready, and suspended conditions.