Create shaders from raw data

[Timic3]

Describe the solution you'd like
Like engine functions, where you can load raw data from DFF, TXD or COL files, it would be also nice to have this feature in dxCreateShader.

Additional context
From https://bugs.mtasa.com/view.php?id=9343. This issue was closed on Mantis and I couldn't find it here.
@qaisjp pointed out that it would probably require a refactor of CRenderItem.

[samr46]

Interesting request. I can make a PR. But should it support includes inside shader code?