feat: dynamic case label

[ferrants]

Check List

• Tests has been run in packages where changes made if available
• Linter has been run for changed code
• Tests for the changes have been added if not covered yet
• Docs have been added / updated if required

Issue Reference this PR resolves

#235

Description of Changes Made (if issue reference is not provided)

label is run through the execute sql function

[paveltiunov]

@ferrants Thanks for contributing this! So the implementation can be just to check if label is an object with sql property then we can evaluate it otherwise save old behavior. Need to add appropriate checks in CubeValidator as well. Test for this use case can be very helpful here.

[ferrants]

Linter has been run for changed code

@paveltiunov I could add linting to this package, but it'll make the PR much bigger.

[paveltiunov]

@ferrants schema compiler isn't ready for whole package linting so let's keep it as is.

Overall PR looks great! Just remove this orphaned res = and we're good to merge! Thanks again!