Make select attribute searchable

[squadgazzz]

Summary

All plugins render their select config items through the shared plugin component template, which has search-enabled hardcoded to false. This means that any dropdown with a long list forces users to scroll through all options with no way to filter. There's no way for plugin authors to opt into search.

• Make the search-enabled attribute on plugin select elements configurable via the item.searchable property
• Plugins can now set searchable: true on select-type config items to allow users to filter/search through dropdown options
• Backwards compatible: existing plugins without searchable set will behave as before (search disabled)

[squadgazzz]

@balbuze, could you take a look please?

[balbuze]

Hello!
Sorry, but only @volumio can validate.
Question : can it helps on FusionDsp with headphone select?

[squadgazzz]

Question : can it helps on FusionDsp with headphone select?

Yes, exactly, that is why I requested this change. The main pain is the AutoEQ list with headphone presets.

[balbuze]

@volumio ? Can you have a look please? TY

[volumio]

@squadgazzz thanks for your contribution. it will be. reviewed ASAP. Bear with me, I'm owning the UI but the time I can devolve to dev work and review is very limited, it might need some time