Implement the Lua scripting support

[Wohlstand]

After a recent bunch of functionality had been implemented, we can implement the lua scripting support now.

The API should be developed from scratch, without attempting to replicate any existing APIs. Basically, we want to keep our API clear and convenient. Support for other custom APIs can be easily re-implemented as a kind of proxy libraries that implements certain APIs as a super-system over native TheXTech's lua API.

Any suggestions and notices are acceptable.

Plan

• Implement the basic lua engine with a minimal set of events and a set of API calls to ensure that the thing works just fine.
• Extend API with more functionality to complete the basic API.

Related discussions:

• Script system in the future? #222
• API's Base structure Idea #407
• API's Base structure Idea 2.0 #439

[SkullGamer205]

Good.

[LoveBodhi]

That's great! With Lua script system, we can create new objects, asset-specific HUD, etc. as possible.

[fexhvhbdsf864]

Very Good.