Test/add test coverage

[kiritowu]

Changes:

• Add full test coverage to current code base.
• Set max_retry default for tenacity.
• Ensure asyncio_detailed are awaited for tenacity retry
• Return last response if tenacity catches fails. This is to properly return TooManyRequestsError as expected.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover
nlb_catalogue_client
client.py	117	0	100%
errors.py	6	0	100%
types.py	23	0	100%
nlb_catalogue_client/api/catalogue
get_get_availability_info.py	70	0	100%
get_get_most_checkouts_trends_titles.py	66	0	100%
get_get_new_titles.py	89	0	100%
get_get_title_details.py	66	0	100%
get_get_titles.py	73	0	100%
get_search_titles.py	93	0	100%
nlb_catalogue_client/models
bad_request_error.py	26	0	100%
bib_format.py	20	0	100%
book_cover.py	54	0	100%
checkouts_title.py	93	0	100%
checkouts_trend.py	80	0	100%
course_code.py	34	0	100%
facet.py	70	0	100%
facet_data.py	46	0	100%
get_availability_info_response_v2.py	55	0	100%
get_title_details_response_v2.py	809	0	100%
get_titles_response_v2.py	55	0	100%
internal_server_error.py	26	0	100%
item.py	140	0	100%
location.py	20	0	100%
media.py	20	0	100%
method_not_allowed_error.py	26	0	100%
new_arrival_title.py	809	0	100%
not_found_error.py	26	0	100%
not_implemented_error.py	26	0	100%
search_most_checkouts_titles_response.py	30	0	100%
search_new_titles_response_v2.py	50	0	100%
search_titles_response_v2.py	65	0	100%
service_unavailable_error.py	26	0	100%
status.py	54	0	100%
title.py	809	0	100%
title_record.py	731	0	100%
title_summary.py	135	0	100%
too_many_requests_error.py	26	0	100%
transaction_status.py	54	0	100%
unauthorized_error.py	26	0	100%
usage_level.py	20	0	100%
TOTAL	5064	0	100%

Tests	Skipped	Failures	Errors	Time
474	0 💤	0 ❌	0 🔥	9.407s ⏱️