Backport to branch(3.14) : Add ScalarDB Dao and related files

[feeblefakie]

This is an automated request for a manual backport of the following:

• Original PR: Add ScalarDB Dao and related files  #2417
• Commit to backport: 08dd893

1. Resolve any conflicts that occur during the cherry-picking process.

git fetch origin &&
git checkout 3.14-pull-2417 &&
git cherry-pick --no-rerere-autoupdate -m1 08dd89383e495afb23d3cfb941a4229a674bee8a

2. Push the changes.
3. Merge this PR after all checks have passed.

Thank you!