feat: sheet-checking-and-inspections

[g-pechorin]

✨ Feature

PR Description

Adds an inspect() function that detects things like #78

Would like to detect #8 with it as well (next)

Related Issues or other material

Related #8
Closes #78

Screenshots, example outputs/behaviour etc.

✅ Added/updated tests?

• This PR contains relevant tests / Or doesn't need to per the below explanation

[github-actions]

Coverage Report

File	Stmts	Miss	Branch	BrPart	Cover	Missing
nuh_helper/date_shift
__init__.py	176	82	76	8	47%	42–>51, 60, 80–87, 148–>146, 150–>144, 269–>283, 293–>308, 295, 368–514
_excel.py	94	23	56	8	70%	27–>26, 34, 93, 124–137, 174, 207–>213, 220–231
_parse.py	30	5	16	2	85%	31–40
validation.py	81	7	42	4	89%	56, 70–72, 88–89, 117
nuh_helper/profile
__init__.py	95	81	28	0	11%	33–40, 44–46, 52–69, 77–161
TOTAL	496	198	222	22	57%

Tests	Skipped	Failures	Errors	Time
69	0 💤	0 ❌	0 🔥	9.773s ⏱️