Added deferred tags

It is sometimes necessary to do things on the element AFTER it was inserted into the dom.

This is now possible with deferred attributes/properties.
Syntax still needs some improvement.

div {
  reference.onMaterialize(/*...*/).defer(true)
  // or !(class_ = "asdf")
}()

This will become this in an upcoming PR:

div {
  !class_ = "asdf"
}()

v0.16.0 listen function added

You can now also listen to events on Observed<>

#include <nui/event_system/listen.hpp>

Observed<int> obs;
listen(obs, [](int const& i) {
   // ...  
});

obs = 7;
Nui::globalEventContext.executeActiveEventsImmediately();

Also observed now accept other (user) event contexts.
Which is useful to decouple app events von UI events.

#include <nui/event_system/listen.hpp>

Nui::EventContext userContext;
Observed<int> obs{userContext};
listen(userContext, obs, [](int const& i) {
   // ...
});

obs = 7;
userContext.executeActiveEventsImmediately();

v0.15.4 Inline Injector Takes a Hint

Inline injections can now be moved anywhere in the head.
injection scripts can also (all or none) get the defer tag conditionally set by CMake option.

v0.15.3 More CMake Improvements

What's Changed

• Feat/cmake updates 2 by @5cript in #113

Full Changelog: v0.15.2...v0.15.3

CMake Improvements and Dependency Updates

• Updated nlohmann_json to newer revision.
• Some small CMake improvements.

v0.15.1 Fixed Bug in Reference Attribute

What's Changed

• Fixed dangling reference to function. by @5cript in #110

Full Changelog: v0.15.0...v0.15.1

v0.15.0 Nui RPC in TS/JS

Add nui rpc implementation for javascript or typescript in the frontend.
Allows the use of other frameworks to communicate with the backend.

v0.14.0 Tailwind CSS Support

What's Changed

• Add support for tailwind css, added in: Feat/tailwindcss by @5cript in #108

Full Changelog: v0.13.1...v0.14.0

v0.13.1 Fixed clang 18 warnings

What's Changed

• New warning fixes by @5cript in #107

Full Changelog: v0.13.0...v0.13.1

v0.13.0 Added Delocalized Element Utility

Can now have an element change position across the dom from slot to slot.