Add lookup utility functions inside scripts

[MalteJanz]

To allow lookup of entity IDs like:

• currency by ISO code
• language by locale code
• ...

Option A

Make it generic and allow the script to call something like

let currency_id = lookup("currency", "isoCode", "EUR");

And that would do an API search-ids request and return the ID or run into an error / panic.

Cons of this approach:

• Slows down everything massively.
  • We could try to cache / memoize the results, but still expensive to lookup single unique values
• Might not work for everything easily (like languages with their locale association)

Option B

Prefetch some common lookup values at startup and store them in a HashMap in memory. Then the script would still be fast

let currency_id = lookup_currency("EUR");

Cons of this approach:

• You might miss some use case the user of the tool need