mapfixes: add model transparency fixes

[Fernando-A-Rocha]

Fix for multitheftauto/mtasa-blue#2074

Idea by @FileEX

WIP

[Fernando-A-Rocha]

Sets draw_last model flag to model ID 3089 so its glass transparency works correctly and you can see through it.

BEFORE:

AFTER:

[Nico8340]

Good job!

[Fernando-A-Rocha]

This is a draft because I used engineRestreamWorld() to reload the model but this is overkill, and it also affects the player by making it get stuck and move on the ground when spawning if done at the same time as map fixes loads (happens when you join freeroam).

Me and @FileEX are gonna find a solution

[YSAFE]

Hi. Are you really sure that you need to use engineRestreamWorld() to restore transparent objects?

[ArranTuna]

Is this still a draft because you haven't done all the objects? No need for you to do all the objects for this to be merged. Merging it means that people can add models to the list if they are affected by it, without having to implement the code themselves.

[Fernando-A-Rocha]

Is this still a draft because you haven't done all the objects? No need for you to do all the objects for this to be merged. Merging it means that people can add models to the list if they are affected by it, without having to implement the code themselves.

I need an alternative for not having to do engineRestreamWorld to reload the models

[Fernando-A-Rocha]

because of the model flags

[Fernando-A-Rocha]

Maybe this can be used to re-stream the model after changing its model flags
multitheftauto/mtasa-blue#4357 instead of re-stream world

[Fernando-A-Rocha]

Technically, with that new feature, I think we could call engineRestreamModel(model_id) after engineSetModelFlag(model_id, flag_name, state).