No colour for C-style enums

[helviett]

There is no colour for C-style enums which makes code look weird. I'm not familiar with vscode theming but may be there is a lack of C/C++ semantic knowledge so perhaphs you can use Enhanced colorization feature. There is an example of some Vulkan code:

Applying colour to enum value makes difference:

[dsifford]

@helviett Can you elaborate on what specifically you're asking for here? Bonus points if you open a PR with your suggested changes. :+1: