feat(natives/vehicle): implement getter/setter for vehicle flags

[spacevx]

Goal of this PR

Implement natives to set and get vehicle flags. This is the PR of @kams3 with the addition of the setter.

How is this PR achieving the goal

By reading the specific offset in this signature: 48 85 C0 74 3C 8B 80 ? ? ? ? C1 E8 0F, which exposes vehicle flags on the vehicle.

This rely on https://github.com/citizenfx/fivem-docs/pull/480

This PR applies to the following area(s)

FiveM

Successfully tested on

Game builds: 3095

Platforms: Windows

Checklist

• [x] Code compiles and has been tested successfully.
• [x] Code explains itself well and/or is documented.
• [x] My commit message explains what the changes do and what they are for.
• [x] No extra compilation warnings are added by these changes.

Fixes issues