Handle OpenAlex Rate Limit

[dlg1206]

OpenAlex has a day cap of 100,000 calls every day and is not handled gracefully:

snowsearch/snowsearch/openalex/client.py

Lines 226 to 228 in 58f4d90

	except Exception as e:
	# todo - handle exceed requests per day
	logger.error_exp(e)

During testing this has not caused issues, but exceeding the cap should be handled.