Implement StateTracker::wait_state() with lock-free wakeup and Implement semaphore using condvar and mutex

[Flw5469]

Follow-up PR of my previous PR #749
Implement StateTracker::wait_state() with lock-free wakeup and Implement a semaphore using condvar and mutex

Detail:

1. Make the Waiting Threads waiting using condition variables
2. Add compile time check in SConstruct for whether sem_clockedwait exists
3. Add fall-back semaphore using cond var and mutex for platforms without sem_clockedwait (reason explained here Add StateTracker::wait_state() and converted linux semaphore timed wait into monotonic clock domain  #814 (comment))
4. Add test cases of state_tracker's timeout and blocking.
5. Add test cases of semaphore

[rocstreaming-bot]

🤖 Pull request is currently unmergeable due to conflicts.
Please rebase on up-to-date upstream branch, resolve merge conflicts, and force-push to pull request's branch. Remember to use rebase with force-push instead of a regular merge.

[rocstreaming-bot]

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