Plan for developing WebARKitLib.rs

[kalwalt]

It's essential to develop the basic functions/classes for at least pattern/barcode marker.
I will make a list of all of them. I'm primarly focused on the Webassembly application of this library, but i don't exclude a desktop version, it depends if other people will join this project.
This is a first list of functions that in my opinion we need to implement:

• config
• arParamLoad -> see(ParamFile.c)
• arParamLoadFromBuffer -> see(ParamFile.c)
• arParamChangeSize -> see(ParamChangeSize.c)
• arParamLTCreate
• arCreateHandle
• arSetPixelFormat
• ar3DCreateHandle
• arglCameraFrustumRH
• arDetectMarker
• arPattLoad
• arPattDeleteHandle

and probably many other. For sure it will be needed to implement other structs and types.

[kalwalt]

This was mostly done with #2 but some functions listed in the comment are not yet:

• arParamChangeSize
• ar3DCreateHandle
• arglCameraFrustumRH