add full testing and coverage checks

[rtuszik]

No description provided.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
src
generate_cheatsheet.py	169	39	77%	51–52, 100–102, 117–118, 151–153, 162–164, 174–175, 179, 183, 189–190, 203–229
logger.py	35	3	91%	20, 41–42
template_renderer.py	16	2	88%	18–19
validate_yaml.py	188	32	83%	119–121, 132, 134, 222–249, 253–260
TOTAL	835	76	91%

Tests	Skipped	Failures	Errors	Time
109	0 💤	0 ❌	0 🔥	0.527s ⏱️