No autocompletion for `codiceIPA`, and in general for organisations

[bfabio]

The editor used to have autocompletion for codiceIPA, via an external query to Elastic, but it got lost with the new version:

Screencast.From.2025-10-22.11-09-09.mp4

This makes harder for the user to pick the right code or even understand what code they're supposed to use.

Note that "it.riuso.codiceIPA" is deprecated and superseded by organisation.uri in publiccode.yml v0.5.0, which harmonizes the concept to non Italian PAs, so this can be a chance to think about some sort of generic autocompletion for EU administrations.