fix: mysql conn string requirement

[manzil-infinity180]

What this PR does / why we need it

Description

This adds a function to ensure the connection string has tcp() wrapped around host part. This is required by the go-sql-driver but not required by atlas for DB migration,
From the pr - fix(#560): Fix MYSQL Conn string requirements #565
I added additional test to it

Fixes #560

Acceptance Criteria Met

• Docs changes if needed
• Testing changes if needed
• All workflow checks passing (automatically enforced)
• All review conversations resolved (automatically enforced)
• DCO Sign-off

Special notes for your reviewer:

[manzil-infinity180]

@jkjell please approve for ci run

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 1.56%. Comparing base (a035c62) to head (9cced6f).
⚠️ Report is 411 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #639       +/-   ##
==========================================
- Coverage   82.40%   1.56%   -80.85%     
==========================================
  Files          10     127      +117     
  Lines         358   34583    +34225     
==========================================
+ Hits          295     540      +245     
- Misses         43   33975    +33932     
- Partials       20      68       +48     

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[manzil-infinity180]

Closing this, I thought #565 is failing reason he raised it from main branch adding the licence header to #565