Database implementation for SQLite3

[lyuboxa]

Description

Uses non-ego driver, only sets some default pragmas.

• Ensure journal mode is set to WAL
• Add options to CLI/Config

Quick checks:

• [x] I have followed the Code Guidelines.
• [x] There is no other pull request for the same update/change.
• [x] I have written unit tests.
• [x] I have made sure that the PR is of reasonable size and can be easily reviewed.