add query_s delete_records_s

[codecov-commenter]

Codecov Report

Attention: 30 lines in your changes are missing coverage. Please review.

Comparison is base (083123b) 43.34% compared to head (2b2c473) 44.62%. Report is 2 commits behind head on master.

Files	Patch %	Lines
ormpp/mysql.hpp	75.60%	30 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #147 +/- ## ========================================== + Coverage 43.34% 44.62% +1.27% ========================================== Files 22 22 Lines 3052 3182 +130 ========================================== + Hits 1323 1420 +97 - Misses 1729 1762 +33 ```

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