Feature/more filter types

[mechelon]

No description provided.

[mechelon]

@johguentner What do you think about this approach for filters in general?

Usage:
$textFilter = Filter::textFilter("Name", "equals", "Ada Lovelace");

[johguentner]

@johguentner What do you think about this approach for filters in general?

Usage:
$textFilter = Filter::textFilter("Name", "equals", "Ada Lovelace");

Love it !
What do you think about adding short textFilters as well, like "=" or ">=", or do you think, this would be confusing, since it's the same functionality ? 🤔
If I had to choose one, I'd actually stick with words like "equals", since it's more Notion-like 👌

[mechelon]

Hmm, I would stick with the Notion terms (so equals instead of =). Maybe we can think about shorthands ::numberGreaterThan($value, $prop) or something later 🤔

I also added constants for the values in the Operators class for typo-safety. We should move them to an enum as soon as PHP 8.1 is widely distributed :)