Reducing squeue polling per guidelines

[YodaEmbedding]

It looks like this polls squeue every second:

stui/stui/backend.py

Lines 157 to 165 in 978afa5

	while True:
	latest_jobs = self._get_jobs()
	with self.lock:
	self.latest_jobs = latest_jobs
	if not self.requests.empty():
	cmd = self.requests.get(block=False)
	self._run_command(cmd)
	sleep(1)

However, ComputeCanada guidelines say:

Do not run sq or squeue from a script or program at high frequency, e.g., every few seconds. Responding to squeue adds load to Slurm, and may interfere with its performance or correct operation. See Email notification below for a much better way to learn when your job starts or ends.

It might be good to add a way to reduce polling to every hour or disable it altogether.

[EvoLandEco]

@YodaEmbedding I created a PR to address this issue