OpenCL C support

[vdualb]

Check for existing issues

• [X] Completed

Describe the feature

Add support for OpenCL C language. clangd already provides diagnostics for .cl files, but you have to manually select C language in the bottom panel and there is no OpenCL C language in the list.

If applicable, add mockups / screenshots to help present your vision of the feature

No response

[brodiealexander]

+1 to this. This is the last hurdle to me ditching VSCode.

[vdualb]

Please don't comment "+1", keep in mind that peoples receive email notifications from it. Consider reacting with a thumbs up instead.