Split from #3748

• feat: standalone module functions #3748

Transforms the core modules to standalone module functions.

These core modules are interdependent and thus cannot be transformed on their own.

• DatatypeModule
• HelpersModule
• NumberModule
• StringModule

Most of the conversion steps are done automatically, but some changes have been done manually.

Please note that I renamed some util files to _, to distinguish files that export an API SMF from those that don't.

This PR can be reviewed more easily using two ways

1. Compare automated steps vs PR

#checkout PR
git reset HEAD~1 --hard
pnpm tsx scripts/temp-tranform-once.ts 
pnpm tsx scripts/generate-module-tree.ts
mv src/modules/helpers/eval.ts src/modules/helpers/_eval.ts
mv src/modules/helpers/luhn-check.ts src/modules/helpers/_luhn-check.ts 
git add .
git diff origin/feat/standalone/core-modules
#There will be quite a bit of delta
#Mostly from functions being moved to separate/different files

2. Verify no diff in modules to #3748 and look at the manual transform commits

#checkout PR
git diff origin/feat/standalone-module-functions -- src/modules/<ModuleName>
#No Diff expected

Check the individual module transform commits:

• Datatype (No manual changes)
• Helpers (#3748)
• Number (#3748)
• String (#3748)
• Generate Module Tree (#3748) (Technically automated, but might be interesting anyway)
• Final Fixes and Cleanup (#3748)

Please do not merge any PRs changing anything in the modules after this PR until all modules are transformed.