#22 Setup coverage for CI/CD, some pragma no cover comments

[github-actions[bot]]

Coverage Report

File	Stmts	Miss	Cover	Missing
src/api/common
helpers.py	48	1	97%	18
src/api/health
dependencies.py	24	2	93%	32–33
src/api/pool
dependencies.py	422	2	99%	556–557, 619–>624
randomization_algorithms.py	107	4	95%	68, 70, 82, 109
src/database
database_connection.py	45	2	96%	54–55
TOTAL	1479	11	99%

Tests	Skipped	Failures	Errors	Time
214	0 :zzz:	0 :x:	0 :fire:	4m 26s :stopwatch: