Multisearch + dynamic filters V2

[Zales0123]

Replaces #17

In the beginning, I wanted to separate those concepts, as I already wrote to @loevgaard... but as I started the refactor and improvements on #17 it was eventually hard (and potentially time-consuming) to come back to the single search feature. Therefore, I decided to left them coupled to each other, I hope the PR is not too big (spoiler alert: it will be xD 💃)

The main things that were done in this PR:

• multi-search functionality (added already in Refactor the Search Engine & Filter Builder #17)
• slight SearchEngine refactoring (see to-dos)
• dynamic filters - compared to implementation from the previous PR, filters are generated based on the #[Facet] attribute on the documented entity. The type of the filter is generic, based on the type of the property, which does not have to be defined in the attribute (it's taken from the property/method reflection data)
• dynamic filers form types (that also use the #[Facet] attribute)
• added a new filter for price + a corresponding filter form type (I don't know if it was required xD but I suppose it does not harm, as we approach facets in a generic way 🚀)

The current functionality is shown in the video below:

Nagranie.z.ekranu.2024-08-30.o.14.30.36.mov

What is left to be done:

• refactor SearchEngine fully (there are a couple of private methods there, each of them could and should be a separate service)
• simplify facets forms builders (I have a feeling they're a little bit overcomplicated)
• improve the price filter UI (it's hideous 🤮)
• add some test cases to the SearchTest
• test adding some new facet, if it will be automatically resolved

🖖

[loevgaard]

I actually didn't use any Semantic CSS markup because I reckon nobody uses it, so by not using it, maybe, just maybe they won't have to override this file :D

You don't have to fix it. I can just fix it in another PR :)