This PR adds an exec.go file that contains sqlair versions of Exec, Query and their contextualised versions.
The standard go sql.DB type is embedded in sqlair.DB meaning all its methods are still accessible (though they will only work with queries containing the sqlair DML if the method is overwritten in exec.go).
This PR adds an exec.go file that contains
sqlairversions ofExec,Queryand their contextualised versions.The standard go
sql.DBtype is embedded insqlair.DBmeaning all its methods are still accessible (though they will only work with queries containing thesqlairDML if the method is overwritten inexec.go).