Fix OOP definitions to return vectors for listed APIs

[QueryOfficial]

Summary

Wire OOP method/property getters (and matching Vector setters where needed) so the APIs listed in #1583 return Vector2/Vector3 instead of multiple floats.

Procedural functions (e.g. getObjectScale, guiGetPosition, getRadarAreaSize) are unchanged and still return floats.

Examples:

-- procedural (unchanged)
local x, y, z = getObjectScale(obj)

-- OOP (now returns a vector)
local scale = obj:getScale()
local scale2 = obj.scale

Covered (client/server as applicable): RadarArea size, Object scale, Ped muzzle position, Light direction, Vehicle turret/respawn, Water vertex position, GUI position/size/nativeSize, TextItem position.

Skipped: server getCameraMatrix (incomplete stub), server PointLight (does not exist).

Motivation

Several OOP definitions incorrectly returned multiple floats (or were missing vector OOP wiring), so :getX() / .x did not match the expected vector OOP semantics.

Fixes #1583.

Test plan

1. Build client and server; confirm the changed luadefs compile cleanly.
2. Client: for Object/Ped/Light/Vehicle/RadarArea/Water/GUI, verify procedural calls still return floats, while OOP :get*() / .* return Vector types; for GUI also verify .position / .size assign with Vector2.
3. Server: for Vehicle turret/respawn, RadarArea size, TextItem position, and Water vertex position, verify the same procedural-vs-OOP split.

Checklist

• Your code should follow the coding guidelines.
• Smaller pull requests are easier to review. If your pull request is beefy, your pull request should be reviewable commit-by-commit.

[sbx320]

To avoid backwards incompatibility, this should use lua_ncallresult.

For example see https://github.com/multitheftauto/mtasa-blue/blob/master/Client/mods/deathmatch/logic/luadefs/CLuaElementDefs.cpp#L1054

[QueryOfficial]

To avoid backwards incompatibility, this should use lua_ncallresult.

For example see https://github.com/multitheftauto/mtasa-blue/blob/master/Client/mods/deathmatch/logic/luadefs/CLuaElementDefs.cpp#L1054

Thanks, applied. OOP getters now use lua_ncallresult so multi-assign still returns floats, while single/property access returns a vector.

[FileEX]

Wait until @sbx320 approves it.