Separating db engine and core

[benedeki]

• Separated the core and the Slick implementation
• Core is now independent and type-parametrized
• Enceladus moved to examples folder
• Deleted all kind unneeded code

[benedeki]

This might be easier to review as the whole code rather than a PR with code compare. /methinks

[dk1844]

LGTM (just read the code). To the degree that I have understood it, I see nothing wrong.

[AdrianOlosutean]

Probably lettersCase package should also be renamed

[dk1844]

LGTM (just read the code)

[dk1844]

The code of the license check seems ok, but I would expect it to have a direct effect - for the PR to actually launch the check -- which does not appear to be the case.

Could it be perhaps that the correct path should be lowercased? (.github/workflows/) as described in the doc?

[dk1844]

Suggested change

	This library is a less traditional way to facilitate data between an application and an SQL Database.
	Traditionally application directly applies SQL queries or use some ORM framework. While the first approach mixes two
	rather different domain languages within one source, the second too often fails in case of more complicated queries and
	table relations.
	This library is a less traditional way to facilitate data between an application and an SQL Database.
	Traditionally, an application directly applies SQL queries or uses an ORM framework. While the first approach mixes two
	rather different domain languages within one source, the second too often fails in case of more complicated queries and
	table relations.

[dk1844]

Suggested change

	import za.co.absa.fadb.naming_conventions.letters_case.LettersCase._
	import za.co.absa.fadb.namingconventions.letterscases.LettersCase._

or

Suggested change

	import za.co.absa.fadb.naming_conventions.letters_case.LettersCase._
	import za.co.absa.fadb.naming.letterscases.LettersCase._

While I am am aware that both this.is.a.possible.package_name and this.is.a.possible.packagename.too are conforming the general java/scala naming convention, I personally favor the latter.

The base branch was changed.

[AdrianOlosutean]

Looks good