Add modular tests for the Lua scripting API

[Gopmyc]

Description

Adds a modular Lua API test harness.

Changes:

• exposes a shared BindLuaApi setup used by both the engine and tests
• adds OvLuaApiTests, which runs isolated *.test.lua files with a fresh Lua state
• covers initial API surface, factories, enums, and Vector2/Vector3 behavior
• runs Lua API tests in Windows and Linux CI after the build

The test runner avoids initializing full engine services, so service-backed APIs are checked for exposure first and can be covered with dedicated runtime fixtures later.

Related Issue(s)

N/A

Review Guidance

Focus on:

• the shared Lua binding entry point
• whether the first test scope is appropriate for CI
• CI command paths for Windows/Linux

Screenshots/GIFs

N/A

AI Usage Disclosure

Generated new code / Refactored code / Documentation

Checklist

• My code follows the project's code style guidelines
• When applicable, I have commented my code, particularly in hard-to-understand areas
• When applicable, I have updated the documentation accordingly
• My changes don't generate new warnings or errors
• I have reviewed and take responsibility for all code in this PR (including any AI-assisted contributions)

[Gopmyc]

I think the Windows build problem is coming from GitHub @adriengivry, could you please restart it?