Merge pull request #8 from ziflex/feat/beginner-in-transaction-func

Refactor transaction handling to use Beginner interface and improve context management

Merge pull request #7 from ziflex/copilot/fix-09cb999e-9ceb-4bcc-910a…

…-bb876fc6ee23

Remove ContextCreator from Database interface for compatibility with external SQL packages

Merge pull request #6 from ziflex/copilot/fix-90e189e9-9269-4949-aa5d…

…-56380876c5cb

Added io.Closer to Database interface

Added io.Closer to Database interface

Refactored Database constructor

Updated API

Fixed formatting

Added possibility to reuse existing transaction

Refactored constructors